99' GL1500 SE WON'T START


Information and questions on GL1500 Goldwings (1988-2000)
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modou
Posts: 20
Joined: Sun May 19, 2019 10:44 pm
Location: Oakland, CA
Motorcycle: 1999 GL1500 SE

99' GL1500 SE WON'T START

Post by modou »



As of last Friday morning my GL1500 decided to not start after fully cranking twice. My battery is fully charged 12+ Volts, fuel pump has power and is pumping gas upon attempting to start, and I have spark on the plugs (tested cylinder 5 & 6), recently rebuilt my Petcock, resynched carbs (carb 1 was running rich); do I possibly have a vacuum leak somewhere i.e. Petcock, hose :?: :idea:


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Swagonmaster
Posts: 348
Joined: Sun Apr 16, 2017 3:30 pm
Location: Stokesdale, NC
Motorcycle: 1990 gl1500 SE

Re: 99' GL1500 SE WON'T START

Post by Swagonmaster »

Vacuum leaks can stop the parade by themselves and a leak to the petcock would be twice as bad; shuts off the fuel and allows too much air into the engine. If you have a minimum of 12.6 volts at the battery and a blue spark that will jump over a quarter inch then I'd try shooting some carb cleaner in the inlet of the carb to see if it will hit with some guaranteed fuel in it.
Try to learn from the mistakes of others..... you won't live long enough to make them all yourself!
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bluthundr31
Posts: 588
Joined: Tue Jul 11, 2017 11:43 pm
Location: Morgan Hill, CA.
Motorcycle: 1991 GL1500 Interstate (Cinnamon Beige)

Re: 99' GL1500 SE WON'T START

Post by bluthundr31 »

Try by-passing the rebuilt petcock to see if it starts. That will rule out any "problems" with the rebuilt petcock AND might point more directly to a vacuum leak. Just my .02 cents, , ,

If it starts without the petcock in the "loop", recheck the petcock and examine the vacuum hoses real close. Not a great idea to keep the fuel connected directly for too long, , , fix the issue and put the petcock back in the loop asap.
modou
Posts: 20
Joined: Sun May 19, 2019 10:44 pm
Location: Oakland, CA
Motorcycle: 1999 GL1500 SE

Re: 99' GL1500 SE WON'T START

Post by modou »

Thanks for semi confirming my suspicions. Although most of the work mentioned was performed weeks ago, and I road the bike last Thursday with 2 stop and restarts that day. It is really puzzling the heck out of me... :o :shock:
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MikeB
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Joined: Fri Dec 04, 2009 12:54 pm
Location: Tacoma, WA
Motorcycle: 1998 - GL1500 Aspencade
186K Miles
2017 - GL1800 Audio Comfort
20K Miles
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Re: 99' GL1500 SE WON'T START

Post by MikeB »

modou wrote: Mon May 10, 2021 3:09 pm As of last Friday morning my GL1500 decided to not start after fully cranking twice. My battery is fully charged 12+ Volts, fuel pump has power and is pumping gas upon attempting to start, and I have spark on the plugs (tested cylinder 5 & 6), recently rebuilt my Petcock, resynched carbs (carb 1 was running rich); do I possibly have a vacuum leak somewhere i.e. Petcock, hose :?: :idea:
Just for grins, check the voltage at the battery with a VOM as you are trying to start the bike. If the voltage dips below 10 volts, that 12+ volt battery doesn't have the current capacity it needs to start that current thirsty GL1500. That is about all I can think of that would keep it from starting.
MikeB
1998 - GL1500 w/184,500 miles ~ 2017 - GL1800 w/13000 miles
USAF Avionics Communications Tech - 1968 - 1986 / Flight Engineer C-130E - C-141B - 1986 - 1992. Retired
Industrial Maintenance Tech - 1992 - 2014
Retired in Tacoma, WA
modou
Posts: 20
Joined: Sun May 19, 2019 10:44 pm
Location: Oakland, CA
Motorcycle: 1999 GL1500 SE

Re: 99' GL1500 SE WON'T START

Post by modou »

Hi Mike, actually the dang on Petcock was stuck for some reason or another. Once I cleared that up it started right up.


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