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Post by bricks on Aug 8, 2016 8:50:21 GMT -6
I recently picked up a 2002 Kymco People 50. I have replaced the spark plug, the cap, and the computer. The carb has been super cleaned multiple times and I replaced the little float guide pin because it was sticking. It runs super nice at 3/4 throttle almost indefinitely. When I stay at full throttle for a long period of time, eventually it will lose ignition completely. I have to wait and coast along for a bit and then start at a tiny bit of throttle and work it back up to higher rpms. The scooter shop guy says it could be the magneto frwaking out at high rpms but I feel like it is a fuel issue. Sometimes it backfires but usually it doesn't. Is it carb tuning or does the magneto need cleaned?
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Post by cyborg on Aug 9, 2016 7:25:58 GMT -6
Two things come to mind,,,,could be a fuel tank venting issue,,,loosen the cap and take it for a blast to see if you can duplicate the condition,,,if it still happens there may be a high rpm vacuum loss and the auto fuel valve might be closing,,,had that happen on a vespa et4 I owned
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New Student
Currently Offline
Posts: 2
A+'s: 0
Joined: Aug 8, 2016 8:43:52 GMT -6
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Post by bricks on Aug 9, 2016 11:47:56 GMT -6
How do I solve the issue if it's a high rpm vacuum issue? I have tried the fuel cap. It is loose.
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Post by cyborg on Aug 9, 2016 20:22:31 GMT -6
What I did on my Vespa is I drew suction on the manifold line to the peacock and clamped it off with some surgical hemostats,,(small locking pliers) if the diaphragm is good it will hold vacuum and my problem went away
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