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81 650e idles rough after ride

  • Thread starter Thread starter tsc
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tsc

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So far , I've been out on my newly aquired 81 gs650e (11K miles ) twice. Both trips have been mostly highway, few stops, 30 mile trips. Bike starts and runs fine on the trip, idles fine at stop lights, and runs great. When I park the bike, it wants to idle really rough and almost stalls. I haven't checked the plugs yet, but it did look like it was running slightly rich before I had it out on the road ( putting around the yard ). I wanted to ride it a few times to open it up and check them then. It doesn't have a stock exhaust. It's a 4 to 1 with a megaphone on it. Airfilter looks good, but I haven't replaced it yet. Any ideas?
 
You need to check the plugs and find out if it was jetted for the 4-1 exhaust.
 
tsc said:
So far , I've been out on my newly aquired 81 gs650e (11K miles ) twice. Both trips have been mostly highway, few stops, 30 mile trips. Bike starts and runs fine on the trip, idles fine at stop lights, and runs great. When I park the bike, it wants to idle really rough and almost stalls. I haven't checked the plugs yet, but it did look like it was running slightly rich before I had it out on the road ( putting around the yard ). I wanted to ride it a few times to open it up and check them then. It doesn't have a stock exhaust. It's a 4 to 1 with a megaphone on it. Airfilter looks good, but I haven't replaced it yet. Any ideas?
Click to expand...
Clean your plugs and air filter,or get new ones.Do you have a baffel in the megaphone or is it straight a thru pipe?I didnt ride my bike for 2 weeks and it would not stay idling untill I cleaned the plugs and air filter.It has ran fine ever since.
 
Plugs are good; nice brown color - Airfilter is questionable. I have a new one on order.

The exhaust has a baffle in it. I'm not sure what make the pipe is . The megaphone is welded on.
 
tsc said:
Plugs are good; nice brown color - Airfilter is questionable. I have a new one on order.

The exhaust has a baffle in it. I'm not sure what make the pipe is . The megaphone is welded on.
Click to expand...
clean the plugs and regap them.Check for good spark on all cylinders too.One bad plug could make it do that. if they are old I would change them out anyway.I always ride with 4 new ones with me just in case.
 
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Is it just a very low idle when it gets hot? If so, suggests maybe an air intake leak check the wonderful connection between the air box and the carbs by spraying carb cleaner and see if the idle changes.
 
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