XT600 4PTA idle Idle speed remains high
I have an idle problem with my Xt600 model 4PTA. Model year 2000.
The idle speed often stays high, around 2100 rpm. The symptom is worse when the engine is really warm.
This does not happen every time when revs drop. Sometimes the revs drop to normal and when they stay high, the revs can sometimes drop to normal after a while. If I load the engine by starting off at idle or against the front brake, the revs often drop to normal. if the throttle is not touched when starting off.
The intake side rubbers have been replaced with new ones and the carburetor has been cleaned and checked.
Neither the linkage nor the cable seems to be holding up.
When spraying with brake cleaner, there are no leaks at all, unlike when the rubber grommets break.
I have tried adjusting the pilot screw (idle mixture screw), but it does not seem to have any effect on this problem.
The default setting was 2.5 turns open when I put the carburetor back on.
What could be causing this problem?
Last edited by Jex; 6 Days Ago at 17:13.
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