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Post by maxifields on May 15, 2016 17:33:39 GMT
New issue for me. The last couple of times I've been out, if I go above 45 50 it jerks abit and then dies on me . Its starts up straight away and is all good around town but just doesn't like it above 45 50 .Any ideas where to start?
Cheers to anyone who replies
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Post by vespasco on May 15, 2016 19:37:22 GMT
check the fuel supply to the main jet...like check the carb float bowl top / needle valve
i could just as easily be electrical , without knowing more detail it's hard to say
points model? - check condenser
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Post by maxifields on May 15, 2016 20:16:32 GMT
hi yer,
Its a Vespa sprint 69 which I got last year, since purchased its had new carb coil ht lead plug and points and condenser .Will check carb tomorrow cheers
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Post by phattanglo on May 17, 2016 17:21:47 GMT
I had the same problem and as silly as it sounds, it was caused by too hot a plug. I put the correct plug in and all was sublime. Worth checking.
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Post by maxifields on May 22, 2016 7:27:32 GMT
Thanks will try new plug and gotta strip carb as its now backfiring unfortunately its about 5th of list of jobs to be done .Will let you know the out come.Cheers everyone.
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Post by maxifields on May 27, 2016 17:45:36 GMT
THe plug I'm using is NGK B6HS anyone recommend anything different
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Post by maxifields on Jun 17, 2016 18:08:07 GMT
MY sprint(150 169)is now top of my list I've had to change the petrol tap as its wouldn't turn off.Replaced with a fastflow not sure if this is a good idea or not.Anyway now I've cleaned the carb but it still just wont start just backfires after a couple of kicks.This all started about a month ago when it started dieing at 50 mph and now she's dead. any ideas where to start
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Post by maxifields on Jun 18, 2016 5:27:31 GMT
Changed plug it started but then died.found plug very wet so presuming carb issue
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