bikeskint Posted yesterday at 07:34 AM Report Share Posted yesterday at 07:34 AM 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 19 hours ago Report Share Posted 19 hours 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 19 hours ago by lemur 2 Quote Link to comment Share on other sites More sharing options...
kurtas Posted 9 hours ago Report Share Posted 9 hours ago What happens if you give the throttle a big blip when it starts revving up? Could also be starved of fuel if there is not an air leak as Lemur has suggested. 1 Quote Link to comment Share on other sites More sharing options...
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