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Old 04-09-2012, 06:29 PM
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tooljunkie tooljunkie is offline
Motorized Bicycle Elite Member
Join Date: Apr 2012
Location: Manitoba,Canada
Posts: 659
Default Re: Something odd with my engine. ?

my 48 grubee does this also,i raised the clip (dropping the needle) and it runs smoother for a longer stretch,as the rpm's are climbing,then it fourstrokes til i slow down and accelerate again.its rich,i know it is,by reading the wide open its worse,but 43 kph is too fast on the gravel road i drive on anyway.
jetting is the key,reading the plug is the trick to getting to the right jet size.
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