Poor Performance


Information and questions on GL1500 Goldwings (1988-2000)
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johnstatler

Poor Performance

Post by johnstatler »



My 1997 SE runs with no problems at idle and low speed. However when on the road bike has poor performance. It bucks, stumbles and looses power. Have replaced air filter, full filter, and spark plugs. When new filters were installed the bike ran great for about
100 miles then started acting up again. Carbs??


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MikeB
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Re: Poor Performance

Post by MikeB »

I would suspect the auto fuel shut off valve. It is just inside the fuel door near the fuel cap, on the right. Cyclemax of Ohio has rebuild kits I believe.
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
statlerj
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Re: Poor Performance

Post by statlerj »

Thanks for your input. I’m also retired from the Air Force 1966-1988.
Ground Radio Tech 304x4
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MikeB
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Re: Poor Performance

Post by MikeB »

statlerj wrote: Wed Apr 28, 2021 7:46 pm Thanks for your input. I’m also retired from the Air Force 1966-1988.
Ground Radio Tech 304x4
I was a 301X0 until they changed it to 328X0. Don't remember the year that was done but it didn't change anything.

So, did you take a look at the auto fuel shut off valve? You know you can bypass it to do a test.
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
statlerj
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Joined: Sat Jun 21, 2014 6:15 am
Location: Morgantown, West Virginia
Motorcycle: 1986 Interstate

Re: Poor Performance

Post by statlerj »

Not yet will check it tomorrow. Also want to check full pump. The fuel filter had a large bubble in it.
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MikeB
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Motorcycle: 1998 - GL1500 Aspencade
184K Miles
2017 - GL1800 Audio Comfort
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Contact:

Re: Poor Performance

Post by MikeB »

A large bubble? Not in the plastic right? I think you are talking about available space in the fuel filter. It has been my experience that there fuel filter never fills up. There is always air space in the fuel filter.
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
statlerj
Posts: 4
Joined: Sat Jun 21, 2014 6:15 am
Location: Morgantown, West Virginia
Motorcycle: 1986 Interstate

Re: Poor Performance

Post by statlerj »

Bypassed the Auto Fuel Valve. Didn’t correct the problem.
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MikeB
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Joined: Fri Dec 04, 2009 12:54 pm
Location: Tacoma, WA
Motorcycle: 1998 - GL1500 Aspencade
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2017 - GL1800 Audio Comfort
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Contact:

Re: Poor Performance

Post by MikeB »

Perhaps you have some water in the fuel.
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
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ct1500
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Re: Poor Performance

Post by ct1500 »

Next stop would be to check the vacuum secondaries (slides) after fuel pump output pressure test which should be 1.5psi


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