89 GL1500 hesitation/stahl during acceleration


Information and questions on GL1500 Goldwings (1988-2000)
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valkyrie.sek
Posts: 2
Joined: Fri Jun 17, 2011 11:54 am
Location: dayton, ohio
Motorcycle: 1989 GL1500

89 GL1500 hesitation/stahl during acceleration

Postby valkyrie.sek » Fri Jun 17, 2011 12:02 pm



When aggresively accelerating to highway speeds or there is a significant load on the engine, my bike wants to hesitate and nearly stahl. If I gradually accelerate or am not pulling a trailer, the bike appears to perform normally and I can acheive highway speeds in excess of 75+ mph. It's been suggested there may be issues with the vaccumm hoses? Thoughts or reccommeded trouble shooting would be greatly appreciated. I am having difficulty finding local cycle shops that work on bikes older than 1990.



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virgilmobile
Posts: 7663
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 89 GL1500 hesitation/stahl during acceleration

Postby virgilmobile » Fri Jun 17, 2011 12:58 pm

I wish I had a 1500 to fuss over.But in the mean time,even I would replace any 22 year old rubber hoses.It's relatively cheep and easy to do,even if it doesn't fix the problem(it should).

valkyrie.sek
Posts: 2
Joined: Fri Jun 17, 2011 11:54 am
Location: dayton, ohio
Motorcycle: 1989 GL1500

Re: 89 GL1500 hesitation/stahl during acceleration

Postby valkyrie.sek » Fri Jun 17, 2011 2:45 pm

I appreciate the optimism. However, In looking through the service manual I have for the bike, there must be 30+ hoses... suggestions on where to begin? Also, several forums have talked about ordering sets of hoses specific to the make and year of the bike due to specific bends in the hoses. Any guidance or where to look for discussion and walkthrough of hose replacemnet? Searches online to date have not proven fruitful.

Bbwelder
Posts: 48
Joined: Sun May 22, 2011 9:10 pm
Location: Huntsville tx
Motorcycle: 1985 gl1200

Re: 89 GL1500 hesitation/stahl during acceleration

Postby Bbwelder » Fri Jun 17, 2011 3:34 pm

Have you checked the vacume presure with a gauge. Most times if it has a pulse there will be a leak.

dsumerlin
Posts: 2
Joined: Sat Jun 18, 2011 6:34 am
Location: Theodore, Al.
Motorcycle: 1995 Honda GL1500 SE Goldwing

Re: 89 GL1500 hesitation/stahl during acceleration

Postby dsumerlin » Sat Jun 18, 2011 10:25 pm

I had a simular problem with my 1500. If you hold the throttle at about 1000 RPM's (in nutral), the engine RPM would surge up and down. Engine felt like it was stalling during acceleration. It got poor gas milage and had a fumey, rich gas smell while idleing or driving. The problem was the short "L" shaped vacuum hose at the base and the rear of the left carburator. There is extreme heat in that area and the hose will become brittle and crack with age. When replaced, it ran fine. I hope this helps you.

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reasonator
Posts: 41
Joined: Wed May 04, 2011 3:25 pm
Location: Corydon, IN
Motorcycle: 1989 GL1500

Re: 89 GL1500 hesitation/stahl during acceleration

Postby reasonator » Sun Jun 19, 2011 12:58 am

I too have an '88 with VERY similar symptoms. Is yours rougher in 1st & 2nd, then much better in 3rd and up?! It was suggested to me by my local dealership to tear into the carbs and clean anything and everything possible (my dealership will not work on anything older than a '90 also!), he also said it was very unlikely that I needed a full tune up/carb sync done. It will be a couple weeks before I have the time to get into this project, but I will post another reply with results as soon as I can get it done;)

Thanks for the tip on the small "L" shaped hose, I will keep in mind to inspect that extra carefully while I'm in there!
"Those that dare to be can never be weak." - Unknown

ALEXB
Posts: 10
Joined: Thu Apr 22, 2010 11:40 pm
Location: ANAHEIM, CA
Motorcycle: GL1500SE (1990 & 2000)

Re: 89 GL1500 hesitation/stahl during acceleration

Postby ALEXB » Fri Jul 01, 2011 3:35 pm

You very likely have a vacuum leak that is affecting the Timing... it's a common problem, affecting a particular line beneath the carb... Read this for detail:
http://www.hrot.org/martino/carb/index.htm

You can redo all your vacuum lines (and coolent lines too) in one weekend... it's not terribly difficult for most of them. Can use Generic vacuum line for all of them, available from any auto parts store.


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