Question about Motorcycles
Posted by Anonymous on
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Posted on Jan 02, 2017
Check the choke to see it is not stuck on.
Something is causing the bike to run rich as you said.
Make sure the throttle slide isn't stuck and is working ok.
Try a smaller size jet.
Posted on Jun 15, 2009
check the neddle valve seats under the float bowls,may find that theseats are not sealing,to test,take the carbs off the bike,remove the bowls ,compress the floats untill they are all the way up(simulates full bowl of fuel)then blow through the fuel inlet pipe,you should not be able to hear air passing throgh the valve if you can replace the valve seat and the needle valve,sorry cant remember point settings,long time ago since i worked on one of these
Posted on Jul 04, 2009
SOURCE: I have a 1978 R80/7
it could be that you have a vacuum leak between the cylinder and the carb that is leaning out your fuel, check the connection between the the two. to confirm that there is a vacuum leak spray some brake cleaner or any flammable gas on the connection between the two and if the revs go up, you found the problem... hope that helps
Posted on Aug 14, 2009
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