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  #1  
Old 18th February 2008
L0WRIDE L0WRIDE is offline
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Question High Idle Speed / Timing issue?

So I just finished doing a head Job on my 1990 900 Non-Turbo... It purs like a kitten but it seems that the idle speed is too high? Should I try to adjust or could this be an issue with timing. it idles after warm up at around 1100 RPM and never drops below 1K at any time...

I tried to adjust the timing but it seems to be staying at around 12 - 20 degrees advanced. I've tried to adjust to 0 or TDC but turning the distributor does nothing until its turned to far and the engine cuts off. there is no responce from turning the distributor to the degree change on the flywheel?
Am I supposed to tim eit at a specific RPM?

I'm not really worried about the timing becauase the engine is running very smooth, I guess my question is why is it idling high and what do you think I should do about it?

Thanks for any help you can give?
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Old 18th February 2008
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Matt88S Matt88S is offline
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High idle is probably a vacuum leak issue. I would try to hunt that down, then immediently set the timing. I've forgotten what rpm you are suppose to set the timing at, I think it says on one of the stickers on the fenders though.

Do you not have a Bentley?
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Old 19th February 2008
L0WRIDE L0WRIDE is offline
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Could using to small of vaccum lines effect the actual operation of the AIC? do you think that if I used a lined that was one size down from the factory that it could be causing a high idle?
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Old 19th February 2008
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Quote:
Originally Posted by L0WRIDE
Could using to small of vaccum lines effect the actual operation of the AIC? do you think that if I used a lined that was one size down from the factory that it could be causing a high idle?
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