748 not starting

D
ducdude
Fri, Dec 30, 2022 1:13 AM

My 1997 748  started up this morning just as she always does perfectly.  I let her idle up to temp  to do the oil  filter etc..

I also bled the brakes, cleaned out the fuel tank and put in fresh fuel, topped off the coolant,  adjusted the chain bled the clutch, cleaned up some rusting fittings and made some  other none engine adjustments.

Now the bike will not start.  She cranks but will not pop off.  I changed the plugs and checked the fuel connections and they seem good.

I was thinking of checking the air gap  at the Hall effect / timing sensor but I am other wise stumped as to why the bike now will not fire...

It sounds as though the ignition is just not firing as hear the fuel pump prime and those relays seem to be working...

Any help would be greatly appreciated !

Many Thanks !

Eric

My 1997 748 started up this morning just as she always does perfectly. I let her idle up to temp to do the oil filter etc.. I also bled the brakes, cleaned out the fuel tank and put in fresh fuel, topped off the coolant, adjusted the chain bled the clutch, cleaned up some rusting fittings and made some other none engine adjustments. Now the bike will not start. She cranks but will not pop off. I changed the plugs and checked the fuel connections and they seem good. I was thinking of checking the air gap at the Hall effect / timing sensor but I am other wise stumped as to why the bike now will not fire... It sounds as though the ignition is just not firing as hear the fuel pump prime and those relays seem to be working... Any help would be greatly appreciated ! Many Thanks ! Eric
VS
Vicki Smith
Fri, Dec 30, 2022 1:27 AM

Did you pull a spark plug and check if it’s actually sparking or not? Stupid question but you didn’t accidentally knock off the handlebar switch did you?
Vicki

On Dec 29, 2022, at 8:13 PM, ducdude ducdude@verizon.net wrote:


My 1997 748  started up this morning just as she always does perfectly.  I let her idle up to temp  to do the oil  filter etc..

I also bled the brakes, cleaned out the fuel tank and put in fresh fuel, topped off the coolant,  adjusted the chain bled the clutch, cleaned up some rusting fittings and made some  other none engine adjustments.

Now the bike will not start.  She cranks but will not pop off.  I changed the plugs and checked the fuel connections and they seem good.

I was thinking of checking the air gap  at the Hall effect / timing sensor but I am other wise stumped as to why the bike now will not fire...

It sounds as though the ignition is just not firing as hear the fuel pump prime and those relays seem to be working...

Any help would be greatly appreciated !

Many Thanks !

Eric

Did you pull a spark plug and check if it’s actually sparking or not? Stupid question but you didn’t accidentally knock off the handlebar switch did you? Vicki > On Dec 29, 2022, at 8:13 PM, ducdude <ducdude@verizon.net> wrote: > >  > My 1997 748 started up this morning just as she always does perfectly. I let her idle up to temp to do the oil filter etc.. > > I also bled the brakes, cleaned out the fuel tank and put in fresh fuel, topped off the coolant, adjusted the chain bled the clutch, cleaned up some rusting fittings and made some other none engine adjustments. > > Now the bike will not start. She cranks but will not pop off. I changed the plugs and checked the fuel connections and they seem good. > > I was thinking of checking the air gap at the Hall effect / timing sensor but I am other wise stumped as to why the bike now will not fire... > > It sounds as though the ignition is just not firing as hear the fuel pump prime and those relays seem to be working... > > Any help would be greatly appreciated ! > > Many Thanks ! > > Eric >
SR
SCOTT ROTHERMEL
Fri, Dec 30, 2022 3:10 AM

Fuel line in the tank

Sent from my iPhone

On Dec 29, 2022, at 7:27 PM, Vicki Smith Vicki@ducati.net wrote:


Did you pull a spark plug and check if it’s actually sparking or not? Stupid question but you didn’t accidentally knock off the handlebar switch did you?
Vicki

On Dec 29, 2022, at 8:13 PM, ducdude ducdude@verizon.net wrote:


My 1997 748  started up this morning just as she always does perfectly.  I let her idle up to temp  to do the oil  filter etc..

I also bled the brakes, cleaned out the fuel tank and put in fresh fuel, topped off the coolant,  adjusted the chain bled the clutch, cleaned up some rusting fittings and made some  other none engine adjustments.

Now the bike will not start.  She cranks but will not pop off.  I changed the plugs and checked the fuel connections and they seem good.

I was thinking of checking the air gap  at the Hall effect / timing sensor but I am other wise stumped as to why the bike now will not fire...

It sounds as though the ignition is just not firing as hear the fuel pump prime and those relays seem to be working...

Any help would be greatly appreciated !

Many Thanks !

Eric

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Fuel line in the tank Sent from my iPhone > On Dec 29, 2022, at 7:27 PM, Vicki Smith <Vicki@ducati.net> wrote: > >  > Did you pull a spark plug and check if it’s actually sparking or not? Stupid question but you didn’t accidentally knock off the handlebar switch did you? > Vicki > >>> On Dec 29, 2022, at 8:13 PM, ducdude <ducdude@verizon.net> wrote: >>> >>  >> My 1997 748 started up this morning just as she always does perfectly. I let her idle up to temp to do the oil filter etc.. >> >> I also bled the brakes, cleaned out the fuel tank and put in fresh fuel, topped off the coolant, adjusted the chain bled the clutch, cleaned up some rusting fittings and made some other none engine adjustments. >> >> Now the bike will not start. She cranks but will not pop off. I changed the plugs and checked the fuel connections and they seem good. >> >> I was thinking of checking the air gap at the Hall effect / timing sensor but I am other wise stumped as to why the bike now will not fire... >> >> It sounds as though the ignition is just not firing as hear the fuel pump prime and those relays seem to be working... >> >> Any help would be greatly appreciated ! >> >> Many Thanks ! >> >> Eric >> > > > > > To get the links and updates on all today's Ducati news: > http://www.ductalk.com/ > and > https://www.facebook.com/ducnet > _____________________ > Ducati mailing list -- ducati@list.ducati.net > To unsubscribe send an email to ducati-leave@list.ducati.net > Mailto: %(user_address)s
PM
Paul March
Fri, Dec 30, 2022 5:07 AM

I had this happen to my 748 and it was the ignition relay, I believe it's
the yellow relay on the right side near the starter solenoid.
Another issue when it was turning over but not starting was the injector
relays.

Paul

On Thu, Dec 29, 2022 at 8:27 PM Vicki Smith Vicki@ducati.net wrote:

Did you pull a spark plug and check if it’s actually sparking or not?
Stupid question but you didn’t accidentally knock off the handlebar switch
did you?
Vicki

On Dec 29, 2022, at 8:13 PM, ducdude ducdude@verizon.net wrote:


My 1997 748  started up this morning just as she always does perfectly.  I
let her idle up to temp  to do the oil  filter etc..

I also bled the brakes, cleaned out the fuel tank and put in fresh fuel,
topped off the coolant,  adjusted the chain bled the clutch, cleaned up
some rusting fittings and made some  other none engine adjustments.

Now the bike will not start.  She cranks but will not pop off.  I changed
the plugs and checked the fuel connections and they seem good.

I was thinking of checking the air gap  at the Hall effect / timing sensor
but I am other wise stumped as to why the bike now will not fire...

It sounds as though the ignition is just not firing as hear the fuel pump
prime and those relays seem to be working...

Any help would be greatly appreciated !

Many Thanks !

Eric

To get the links and updates on all today's Ducati news:
http://www.ductalk.com/
and
https://www.facebook.com/ducnet


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I had this happen to my 748 and it was the ignition relay, I believe it's the yellow relay on the right side near the starter solenoid. Another issue when it was turning over but not starting was the injector relays. Paul On Thu, Dec 29, 2022 at 8:27 PM Vicki Smith <Vicki@ducati.net> wrote: > Did you pull a spark plug and check if it’s actually sparking or not? > Stupid question but you didn’t accidentally knock off the handlebar switch > did you? > Vicki > > On Dec 29, 2022, at 8:13 PM, ducdude <ducdude@verizon.net> wrote: > >  > My 1997 748 started up this morning just as she always does perfectly. I > let her idle up to temp to do the oil filter etc.. > > I also bled the brakes, cleaned out the fuel tank and put in fresh fuel, > topped off the coolant, adjusted the chain bled the clutch, cleaned up > some rusting fittings and made some other none engine adjustments. > > Now the bike will not start. She cranks but will not pop off. I changed > the plugs and checked the fuel connections and they seem good. > > I was thinking of checking the air gap at the Hall effect / timing sensor > but I am other wise stumped as to why the bike now will not fire... > > It sounds as though the ignition is just not firing as hear the fuel pump > prime and those relays seem to be working... > > Any help would be greatly appreciated ! > > Many Thanks ! > > Eric > > > > > > > To get the links and updates on all today's Ducati news: > http://www.ductalk.com/ > and > https://www.facebook.com/ducnet > _____________________ > Ducati mailing list -- ducati@list.ducati.net > To unsubscribe send an email to ducati-leave@list.ducati.net > Mailto: %(user_address)s
S
scfoster1@gmail.com
Fri, Dec 30, 2022 4:23 PM

Try some ether. If it fires up, some sort of fuel issue. If not it's an
ignition problem.

On Fri, Dec 30, 2022, 12:07 AM Paul March pjm911@gmail.com wrote:

I had this happen to my 748 and it was the ignition relay, I believe it's
the yellow relay on the right side near the starter solenoid.
Another issue when it was turning over but not starting was the injector
relays.

Paul

On Thu, Dec 29, 2022 at 8:27 PM Vicki Smith Vicki@ducati.net wrote:

Did you pull a spark plug and check if it’s actually sparking or not?
Stupid question but you didn’t accidentally knock off the handlebar switch
did you?
Vicki

On Dec 29, 2022, at 8:13 PM, ducdude ducdude@verizon.net wrote:


My 1997 748  started up this morning just as she always does perfectly.
I let her idle up to temp  to do the oil  filter etc..

I also bled the brakes, cleaned out the fuel tank and put in fresh fuel,
topped off the coolant,  adjusted the chain bled the clutch, cleaned up
some rusting fittings and made some  other none engine adjustments.

Now the bike will not start.  She cranks but will not pop off.  I changed
the plugs and checked the fuel connections and they seem good.

I was thinking of checking the air gap  at the Hall effect / timing
sensor but I am other wise stumped as to why the bike now will not fire...

It sounds as though the ignition is just not firing as hear the fuel pump
prime and those relays seem to be working...

Any help would be greatly appreciated !

Many Thanks !

Eric

To get the links and updates on all today's Ducati news:
http://www.ductalk.com/
and
https://www.facebook.com/ducnet


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Try some ether. If it fires up, some sort of fuel issue. If not it's an ignition problem. On Fri, Dec 30, 2022, 12:07 AM Paul March <pjm911@gmail.com> wrote: > I had this happen to my 748 and it was the ignition relay, I believe it's > the yellow relay on the right side near the starter solenoid. > Another issue when it was turning over but not starting was the injector > relays. > > Paul > > On Thu, Dec 29, 2022 at 8:27 PM Vicki Smith <Vicki@ducati.net> wrote: > >> Did you pull a spark plug and check if it’s actually sparking or not? >> Stupid question but you didn’t accidentally knock off the handlebar switch >> did you? >> Vicki >> >> On Dec 29, 2022, at 8:13 PM, ducdude <ducdude@verizon.net> wrote: >> >>  >> My 1997 748 started up this morning just as she always does perfectly. >> I let her idle up to temp to do the oil filter etc.. >> >> I also bled the brakes, cleaned out the fuel tank and put in fresh fuel, >> topped off the coolant, adjusted the chain bled the clutch, cleaned up >> some rusting fittings and made some other none engine adjustments. >> >> Now the bike will not start. She cranks but will not pop off. I changed >> the plugs and checked the fuel connections and they seem good. >> >> I was thinking of checking the air gap at the Hall effect / timing >> sensor but I am other wise stumped as to why the bike now will not fire... >> >> It sounds as though the ignition is just not firing as hear the fuel pump >> prime and those relays seem to be working... >> >> Any help would be greatly appreciated ! >> >> Many Thanks ! >> >> Eric >> >> >> >> >> >> >> To get the links and updates on all today's Ducati news: >> http://www.ductalk.com/ >> and >> https://www.facebook.com/ducnet >> _____________________ >> Ducati mailing list -- ducati@list.ducati.net >> To unsubscribe send an email to ducati-leave@list.ducati.net >> Mailto: %(user_address)s > > > > > > To get the links and updates on all today's Ducati news: > http://www.ductalk.com/ > and > https://www.facebook.com/ducnet > _____________________ > Ducati mailing list -- ducati@list.ducati.net > To unsubscribe send an email to ducati-leave@list.ducati.net > Mailto: %(user_address)s
RR
Rich Roberts
Fri, Dec 30, 2022 4:49 PM

Simply hearing that relay fuel pump noise no guarantee injectors getting fuel and since you went in tank and did substantial maintenance there would recheck that work. Lots of things can go wrong there. Ignition less likely if it cranks. Course check for spark by pulling ply and grounding to head and if spark bet it is something back in tank.Heck I did a spirited ride years ago locally with Polen. Got back to dealership and fuel leaking out. The hose that connects overflow at fill inside tank at bottom slipped off and was fixing to empty tank on ground. I had not that much before been in tank and that line has no pressure on it as just overflow pass through. But if it comes loose at bottom it is an oh shit moment. Cleaned tank? Think fuel pump trashed up?

R

Sent from my iPhone

On Dec 30, 2022, at 11:24 AM, scfoster1@gmail.com wrote:

Try some ether. If it fires up, some sort of fuel issue. If not it's an ignition problem.

On Fri, Dec 30, 2022, 12:07 AM Paul March <pjm911@gmail.com> wrote:

I had this happen to my 748 and it was the ignition relay, I believe it's the yellow relay on the right side near the starter solenoid.Another issue when it was turning over but not starting was the injector relays.

Paul

On Thu, Dec 29, 2022 at 8:27 PM Vicki Smith <Vicki@ducati.net> wrote:

Did you pull a spark plug and check if it’s actually sparking or not? Stupid question but you didn’t accidentally knock off the handlebar switch did you?

Vicki

On Dec 29, 2022, at 8:13 PM, ducdude <ducdude@verizon.net> wrote:

 My 1997 748 started up this morning just as she always does perfectly. I let her idle up to temp to do the oil filter etc..

I also bled the brakes, cleaned out the fuel tank and put in fresh fuel, topped off the coolant, adjusted the chain bled the clutch, cleaned up some rusting fittings and made some other none engine adjustments.

Now the bike will not start. She cranks but will not pop off. I changed the plugs and checked the fuel connections and they seem good.

I was thinking of checking the air gap at the Hall effect / timing sensor but I am other wise stumped as to why the bike now will not fire...

It sounds as though the ignition is just not firing as hear the fuel pump prime and those relays seem to be working...

Any help would be greatly appreciated !

Many Thanks !

Eric

To get the links and updates on all today's Ducati news:
http://www.ductalk.com/
and
https://www.facebook.com/ducnet
_____________________
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To unsubscribe send an email to ducati-leave@list.ducati.net
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and
https://www.facebook.com/ducnet
_____________________
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and
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BC
Brian Conner
Fri, Dec 30, 2022 5:55 PM

I bought a 750 Monster to flip that the guy couldn’t get running.
The upper fuel line inside the tank had no hose clamp on it.  As soon as the pump turned on it blew off the nipple.
Installed a hose clamp and started right away.
Had so much fun with it after I did some upgrades I kept it.  Damn Ducatis!!

Get Outlook for iOShttps://aka.ms/o0ukef


From: Rich Roberts rossaduc@gmail.com
Sent: Friday, December 30, 2022 9:49:59 AM
To: Ducati Owners Group ducati@list.ducati.net
Subject: [Ducati] Re: 748 not starting

Simply hearing that relay fuel pump noise no guarantee injectors getting fuel and since you went in tank and did substantial maintenance there would recheck that work. Lots of things can go wrong there.  Ignition less likely if it cranks. Course check for spark by pulling ply and grounding to head and if spark bet it is something back in tank.
Heck I did a spirited ride years ago locally with Polen. Got back to dealership and fuel leaking out. The hose that connects overflow at fill inside tank at bottom slipped off and was fixing to empty tank on ground. I had not that much before been in tank and that line has no pressure on it as just overflow pass through. But if it comes loose at bottom it is an oh shit moment. Cleaned tank? Think fuel pump trashed up?
R

Sent from my iPhone

On Dec 30, 2022, at 11:24 AM, scfoster1@gmail.com wrote:


Try some ether. If it fires up, some sort of fuel issue. If not it's an ignition problem.

On Fri, Dec 30, 2022, 12:07 AM Paul March <pjm911@gmail.commailto:pjm911@gmail.com> wrote:
I had this happen to my 748 and it was the ignition relay, I believe it's the yellow relay on the right side near the starter solenoid.
Another issue when it was turning over but not starting was the injector relays.

Paul

On Thu, Dec 29, 2022 at 8:27 PM Vicki Smith <Vicki@ducati.netmailto:Vicki@ducati.net> wrote:
Did you pull a spark plug and check if it’s actually sparking or not? Stupid question but you didn’t accidentally knock off the handlebar switch did you?
Vicki

On Dec 29, 2022, at 8:13 PM, ducdude <ducdude@verizon.netmailto:ducdude@verizon.net> wrote:


My 1997 748  started up this morning just as she always does perfectly.  I let her idle up to temp  to do the oil  filter etc..

I also bled the brakes, cleaned out the fuel tank and put in fresh fuel, topped off the coolant,  adjusted the chain bled the clutch, cleaned up some rusting fittings and made some  other none engine adjustments.

Now the bike will not start.  She cranks but will not pop off.  I changed the plugs and checked the fuel connections and they seem good.

I was thinking of checking the air gap  at the Hall effect / timing sensor but I am other wise stumped as to why the bike now will not fire...

It sounds as though the ignition is just not firing as hear the fuel pump prime and those relays seem to be working...

Any help would be greatly appreciated !

Many Thanks !

Eric

To get the links and updates on all today's Ducati news:
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I bought a 750 Monster to flip that the guy couldn’t get running. The upper fuel line inside the tank had no hose clamp on it. As soon as the pump turned on it blew off the nipple. Installed a hose clamp and started right away. Had so much fun with it after I did some upgrades I kept it. Damn Ducatis!! Get Outlook for iOS<https://aka.ms/o0ukef> ________________________________ From: Rich Roberts <rossaduc@gmail.com> Sent: Friday, December 30, 2022 9:49:59 AM To: Ducati Owners Group <ducati@list.ducati.net> Subject: [Ducati] Re: 748 not starting Simply hearing that relay fuel pump noise no guarantee injectors getting fuel and since you went in tank and did substantial maintenance there would recheck that work. Lots of things can go wrong there. Ignition less likely if it cranks. Course check for spark by pulling ply and grounding to head and if spark bet it is something back in tank. Heck I did a spirited ride years ago locally with Polen. Got back to dealership and fuel leaking out. The hose that connects overflow at fill inside tank at bottom slipped off and was fixing to empty tank on ground. I had not that much before been in tank and that line has no pressure on it as just overflow pass through. But if it comes loose at bottom it is an oh shit moment. Cleaned tank? Think fuel pump trashed up? R Sent from my iPhone On Dec 30, 2022, at 11:24 AM, scfoster1@gmail.com wrote:  Try some ether. If it fires up, some sort of fuel issue. If not it's an ignition problem. On Fri, Dec 30, 2022, 12:07 AM Paul March <pjm911@gmail.com<mailto:pjm911@gmail.com>> wrote: I had this happen to my 748 and it was the ignition relay, I believe it's the yellow relay on the right side near the starter solenoid. Another issue when it was turning over but not starting was the injector relays. Paul On Thu, Dec 29, 2022 at 8:27 PM Vicki Smith <Vicki@ducati.net<mailto:Vicki@ducati.net>> wrote: Did you pull a spark plug and check if it’s actually sparking or not? Stupid question but you didn’t accidentally knock off the handlebar switch did you? Vicki On Dec 29, 2022, at 8:13 PM, ducdude <ducdude@verizon.net<mailto:ducdude@verizon.net>> wrote:  My 1997 748 started up this morning just as she always does perfectly. I let her idle up to temp to do the oil filter etc.. I also bled the brakes, cleaned out the fuel tank and put in fresh fuel, topped off the coolant, adjusted the chain bled the clutch, cleaned up some rusting fittings and made some other none engine adjustments. Now the bike will not start. She cranks but will not pop off. I changed the plugs and checked the fuel connections and they seem good. I was thinking of checking the air gap at the Hall effect / timing sensor but I am other wise stumped as to why the bike now will not fire... It sounds as though the ignition is just not firing as hear the fuel pump prime and those relays seem to be working... Any help would be greatly appreciated ! Many Thanks ! Eric To get the links and updates on all today's Ducati news: http://www.ductalk.com/<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.ductalk.com%2F&data=05%7C01%7C%7Cfb26a26992c6492b040508daea85eed8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638080158208749078%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=EIFlv9pQbApq2Pc5yT%2Fsa6vU9K2lPOf1Wwz3jy8qTvc%3D&reserved=0> and https://www.facebook.com/ducnet<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.facebook.com%2Fducnet&data=05%7C01%7C%7Cfb26a26992c6492b040508daea85eed8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638080158208749078%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=hBcXy6I%2FWsxxiScbDSQAX0sFlr6If2vOVDuqTLSggyE%3D&reserved=0> _____________________ Ducati mailing list -- ducati@list.ducati.net<mailto:ducati@list.ducati.net> To unsubscribe send an email to ducati-leave@list.ducati.net<mailto:ducati-leave@list.ducati.net> Mailto: %(user_address)s To get the links and updates on all today's Ducati news: http://www.ductalk.com/<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.ductalk.com%2F&data=05%7C01%7C%7Cfb26a26992c6492b040508daea85eed8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638080158208749078%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=EIFlv9pQbApq2Pc5yT%2Fsa6vU9K2lPOf1Wwz3jy8qTvc%3D&reserved=0> and https://www.facebook.com/ducnet<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.facebook.com%2Fducnet&data=05%7C01%7C%7Cfb26a26992c6492b040508daea85eed8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638080158208749078%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=hBcXy6I%2FWsxxiScbDSQAX0sFlr6If2vOVDuqTLSggyE%3D&reserved=0> _____________________ Ducati mailing list -- ducati@list.ducati.net<mailto:ducati@list.ducati.net> To unsubscribe send an email to ducati-leave@list.ducati.net<mailto:ducati-leave@list.ducati.net> Mailto: %(user_address)s To get the links and updates on all today's Ducati news: http://www.ductalk.com/ and https://www.facebook.com/ducnet _____________________ Ducati mailing list -- ducati@list.ducati.net To unsubscribe send an email to ducati-leave@list.ducati.net Mailto: %(user_address)s
PM
Paul March
Fri, Dec 30, 2022 9:31 PM

Brian, that happened to my 916, blew the fuel hose off the fuel pump inside
the tank.

Paul

On Fri, Dec 30, 2022 at 12:55 PM Brian Conner bscco@hotmail.com wrote:

I bought a 750 Monster to flip that the guy couldn’t get running.
The upper fuel line inside the tank had no hose clamp on it.  As soon as
the pump turned on it blew off the nipple.
Installed a hose clamp and started right away.
Had so much fun with it after I did some upgrades I kept it.  Damn
Ducatis!!

Get Outlook for iOS https://aka.ms/o0ukef

From: Rich Roberts rossaduc@gmail.com
Sent: Friday, December 30, 2022 9:49:59 AM
To: Ducati Owners Group ducati@list.ducati.net
Subject: [Ducati] Re: 748 not starting

Simply hearing that relay fuel pump noise no guarantee injectors getting
fuel and since you went in tank and did substantial maintenance there would
recheck that work. Lots of things can go wrong there.  Ignition less likely
if it cranks. Course check for spark by pulling ply and grounding to head
and if spark bet it is something back in tank.
Heck I did a spirited ride years ago locally with Polen. Got back to
dealership and fuel leaking out. The hose that connects overflow at fill
inside tank at bottom slipped off and was fixing to empty tank on ground. I
had not that much before been in tank and that line has no pressure on it
as just overflow pass through. But if it comes loose at bottom it is an oh
shit moment. Cleaned tank? Think fuel pump trashed up?
R

Sent from my iPhone

On Dec 30, 2022, at 11:24 AM, scfoster1@gmail.com wrote:


Try some ether. If it fires up, some sort of fuel issue. If not it's an
ignition problem.

On Fri, Dec 30, 2022, 12:07 AM Paul March pjm911@gmail.com wrote:

I had this happen to my 748 and it was the ignition relay, I believe it's
the yellow relay on the right side near the starter solenoid.
Another issue when it was turning over but not starting was the injector
relays.

Paul

On Thu, Dec 29, 2022 at 8:27 PM Vicki Smith Vicki@ducati.net wrote:

Did you pull a spark plug and check if it’s actually sparking or not?
Stupid question but you didn’t accidentally knock off the handlebar switch
did you?
Vicki

On Dec 29, 2022, at 8:13 PM, ducdude ducdude@verizon.net wrote:


My 1997 748  started up this morning just as she always does perfectly.  I
let her idle up to temp  to do the oil  filter etc..

I also bled the brakes, cleaned out the fuel tank and put in fresh fuel,
topped off the coolant,  adjusted the chain bled the clutch, cleaned up
some rusting fittings and made some  other none engine adjustments.

Now the bike will not start.  She cranks but will not pop off.  I changed
the plugs and checked the fuel connections and they seem good.

I was thinking of checking the air gap  at the Hall effect / timing sensor
but I am other wise stumped as to why the bike now will not fire...

It sounds as though the ignition is just not firing as hear the fuel pump
prime and those relays seem to be working...

Any help would be greatly appreciated !

Many Thanks !

Eric

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Brian, that happened to my 916, blew the fuel hose off the fuel pump inside the tank. Paul On Fri, Dec 30, 2022 at 12:55 PM Brian Conner <bscco@hotmail.com> wrote: > I bought a 750 Monster to flip that the guy couldn’t get running. > The upper fuel line inside the tank had no hose clamp on it. As soon as > the pump turned on it blew off the nipple. > Installed a hose clamp and started right away. > Had so much fun with it after I did some upgrades I kept it. Damn > Ducatis!! > > Get Outlook for iOS <https://aka.ms/o0ukef> > ------------------------------ > *From:* Rich Roberts <rossaduc@gmail.com> > *Sent:* Friday, December 30, 2022 9:49:59 AM > *To:* Ducati Owners Group <ducati@list.ducati.net> > *Subject:* [Ducati] Re: 748 not starting > > Simply hearing that relay fuel pump noise no guarantee injectors getting > fuel and since you went in tank and did substantial maintenance there would > recheck that work. Lots of things can go wrong there. Ignition less likely > if it cranks. Course check for spark by pulling ply and grounding to head > and if spark bet it is something back in tank. > Heck I did a spirited ride years ago locally with Polen. Got back to > dealership and fuel leaking out. The hose that connects overflow at fill > inside tank at bottom slipped off and was fixing to empty tank on ground. I > had not that much before been in tank and that line has no pressure on it > as just overflow pass through. But if it comes loose at bottom it is an oh > shit moment. Cleaned tank? Think fuel pump trashed up? > R > > Sent from my iPhone > > On Dec 30, 2022, at 11:24 AM, scfoster1@gmail.com wrote: > >  > Try some ether. If it fires up, some sort of fuel issue. If not it's an > ignition problem. > > On Fri, Dec 30, 2022, 12:07 AM Paul March <pjm911@gmail.com> wrote: > > I had this happen to my 748 and it was the ignition relay, I believe it's > the yellow relay on the right side near the starter solenoid. > Another issue when it was turning over but not starting was the injector > relays. > > Paul > > On Thu, Dec 29, 2022 at 8:27 PM Vicki Smith <Vicki@ducati.net> wrote: > > Did you pull a spark plug and check if it’s actually sparking or not? > Stupid question but you didn’t accidentally knock off the handlebar switch > did you? > Vicki > > On Dec 29, 2022, at 8:13 PM, ducdude <ducdude@verizon.net> wrote: > >  > My 1997 748 started up this morning just as she always does perfectly. I > let her idle up to temp to do the oil filter etc.. > > I also bled the brakes, cleaned out the fuel tank and put in fresh fuel, > topped off the coolant, adjusted the chain bled the clutch, cleaned up > some rusting fittings and made some other none engine adjustments. > > Now the bike will not start. She cranks but will not pop off. I changed > the plugs and checked the fuel connections and they seem good. > > I was thinking of checking the air gap at the Hall effect / timing sensor > but I am other wise stumped as to why the bike now will not fire... > > It sounds as though the ignition is just not firing as hear the fuel pump > prime and those relays seem to be working... > > Any help would be greatly appreciated ! > > Many Thanks ! > > Eric > > > > > > > To get the links and updates on all today's Ducati news: > http://www.ductalk.com/ > <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.ductalk.com%2F&data=05%7C01%7C%7Cfb26a26992c6492b040508daea85eed8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638080158208749078%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=EIFlv9pQbApq2Pc5yT%2Fsa6vU9K2lPOf1Wwz3jy8qTvc%3D&reserved=0> > and > https://www.facebook.com/ducnet > <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.facebook.com%2Fducnet&data=05%7C01%7C%7Cfb26a26992c6492b040508daea85eed8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638080158208749078%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=hBcXy6I%2FWsxxiScbDSQAX0sFlr6If2vOVDuqTLSggyE%3D&reserved=0> > _____________________ > Ducati mailing list -- ducati@list.ducati.net > To unsubscribe send an email to ducati-leave@list.ducati.net > Mailto: %(user_address)s > > > > > > To get the links and updates on all today's Ducati news: > http://www.ductalk.com/ > <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.ductalk.com%2F&data=05%7C01%7C%7Cfb26a26992c6492b040508daea85eed8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638080158208749078%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=EIFlv9pQbApq2Pc5yT%2Fsa6vU9K2lPOf1Wwz3jy8qTvc%3D&reserved=0> > and > https://www.facebook.com/ducnet > <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.facebook.com%2Fducnet&data=05%7C01%7C%7Cfb26a26992c6492b040508daea85eed8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638080158208749078%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=hBcXy6I%2FWsxxiScbDSQAX0sFlr6If2vOVDuqTLSggyE%3D&reserved=0> > _____________________ > Ducati mailing list -- ducati@list.ducati.net > To unsubscribe send an email to ducati-leave@list.ducati.net > Mailto: %(user_address)s > > > > > > To get the links and updates on all today's Ducati news: > http://www.ductalk.com/ > and > https://www.facebook.com/ducnet > _____________________ > Ducati mailing list -- ducati@list.ducati.net > To unsubscribe send an email to ducati-leave@list.ducati.net > Mailto: %(user_address)s > > > > > > To get the links and updates on all today's Ducati news: > http://www.ductalk.com/ > and > https://www.facebook.com/ducnet > _____________________ > Ducati mailing list -- ducati@list.ducati.net > To unsubscribe send an email to ducati-leave@list.ducati.net > Mailto: %(user_address)s