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high idle

  • Thread starter Thread starter Coontaboy
  • Start date Start date
C

Coontaboy

Guest
Hi fellas

I have a gs650 and i recently replaced the extrator rubbers on it. Since then the bike has been reving high and revs have been slow to come down. Often reving up without any throtle at all. The rubbers are fitted correctly and no vacume leaks present. I am not a mechanic and need some advice on this one as it is pretty frustrating at the moment.

Cheers guys.
 
What is an "extrator rubber"?

Sorry, but what you describe sounds exactly like a vacuum leak.
 
sounds like 1 of 2 things(most commonly the 1st of the 2)

1.you have an air leak which is causing to be lean: spray around intake boots with starter fluid/ wd40/ unburnt propane and see if it affects the idle
2. you are actually running rich due to having your idle set too high allowing vacuum to suck gas in from the pilot jet hole instead of only the pilot jet mixture screw hole: set idle lower and see if problem is eliminated.
 
Thanks for the tips fellas. Hey Tom i replaced the inlet boots as there was a leak on two of the boots so i replaced the whole 4 of them. I am guessing that the previous owner tweaked the carbs to account for this. The o rings you refered to have been replaced.
 
Have you turned the big idle knob between carbs 2 and 3? Where are the top mixture screws set? usual start point is 2 to 21/2 turns out from gently seated.
 
The mixture screws are out all the way and two of them have been ruined and not able to be screwed out so will have to work on that first.
 
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