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Showing results for tags '4ac carby idle'.
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Hi all, Just did a transplant and put a 4ac into my 70. It runs great only problem is it's idling way too high. It starts up nicely and then slowly the revs get higher and higher, when you step on the throttle it will raise the revs and then they will not return the revs just keep getting higher. BTW I don't know anything about carby's. Also another interesting thing is that I converted the 4ac from auto to manual and so it had like an auto choke linkage, when I move the auto choke mechanism thing it seems to make a diffeence in how the throttle butterfly thing opens and closes, when I don't touch it the buttlerfly doesnt fully return and the butterfly stays open a bit, when I put a bit of tension on it the butterfly fully closes - I think this could be at least one of the problems, I assume with carby's when there at idle the butterfly should be fully closed. Has anyone else used a auto to manual 4ac and had same problems? or any suggestions? Thanks
