Idling speed on my Aspencade

Information and questions on GL1200 Goldwings (1984-1987)
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Posts: 23
Joined: Sun Jun 06, 2010 10:29 am
Location: Hamilton, Ontario
Motorcycle: 1985 GL1200 Aspencade

Idling speed on my Aspencade

Post by scmoon » Sat May 28, 2011 1:33 pm

Really enjoying my "lady" that I secured last year, that is..when the weather co-operates...

Got a question, though.....

The bike when warm and running, idles high when I come to a stop at traffic lights etc....running upto 1450 rpm....she is fine when first started cold, choke working OK...then warms up..all good - but after riding for a while...very high idle at stop.

Am I correct in thinking I have a vacuum leak somewhere? Where do I start to investigate and hoefully solve?

Appreciate the assistance!

Safe riding, everyone...

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Location: Napa, CA
Motorcycle: 1996 GL1500SE 101k
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Re: Idling speed on my Aspencade

Post by Mooseman » Sat May 28, 2011 11:34 pm

What happens if you adjust your idle when well warmed up? Mine is set for around 1000rpm when well warmed up. When I pull up to a light or stop sign my will be almost 1100 then drop after a bit to 1020 or so.
If you think you have a vacuum leak and have a propane tourch. Spray a little shot of propane gas around the diffrent fitings and see if you get any change in engine speed. Can also spray a littl carb cleaner around the fitings to see if you get an engine surge and thus a vacuuum leak.
If it's all over the map when hot and you had the carbs off. Make sure you didn't pinch one of the o-rings on the intake pipe. A good carb sync is always good. Let us know what you find. I'm not sure what happens if one of the vacuum vales or after burn valves go bad.....
Enjoy the ride. They are all good, just some better than others.

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