82 Yamaha Virago 750. Two nights ago, after making some repairs, it fired up beautifully (though it was idling at 3000 RPM for some reason). I shut it off and left it for the night. Next night, I fired it up, it idled at 1000 (normal) then when I hit the throttle it climbed to 4000 then sputtered and died. Now wont start.
Battery fully charged. Recently dismantled and cleaned the carbs. Spark plugs arc when tested. Clean fuel flows from tank to petcocks, and from petcocks to float bowls. When I try to turn it over the starter motor revs and revs, I can hear the engine cranking, but the bike will not fire up. Occasionally it catches once and fires one piston.
I am fairly certain that the fuel is getting into the combustion chamber, as there is an occasional small backfire out the tailpipes, but I could be wrong.
Other things I have checked - the throttle cable and choke cables are limited correctly. The choke is open, kill switch to ON position, petcocks set to PR (prime). Advice?
2007-10-26
13:27:42
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7 answers
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asked by
sculptorjmbudka
2
in
Motorcycles