bikeskint Posted 6 hours ago Report Share Posted 6 hours ago Hi just picked up a 1978 tr77 starts lovely and idles nicely BUT after a few minutes it will pick up the revs to almost maximum without any input without sounding dense where do i start? Quote Link to comment Share on other sites More sharing options...
lemur Posted 1 hour ago Report Share Posted 1 hour ago (edited) Uncontrolled acceleration can be caused from intake vacuum leak. ... that is where you have a very small air leak type hole somewhere between the carb and cranckcase. Edited 58 minutes ago by lemur 1 Quote Link to comment Share on other sites More sharing options...
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