need help after big bore mod By bababoom18 (Read 438 times)

[bababoom18]

i just finished installing a 72cc cylinder,an A9cam but kept stock valve head till i get the non egr valve cover.it also has a performance exhaust, an orange no rev limit cdi and iridiom plug.now for the help it idles at 2100 no mater what i do till it warms up then idles to a stall and when i get to full throttle it acts like it wants to stall. also before the big bore kit it ran at 9500 at 45 now it only does 40 but tachs out at 8000 some help pleas

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[Alleyoop]

I will repeat what I said in the other post:
Did you re-jet your carb or raise the needle? You need more gas especially with the A9 Cam. And why did you put in a cam anyways?
You should also put on a Uni Filter or some Free Flow Filter, and rejet the carb, most like yours start with a #88 main jet.
It is running really LEAN.
Alleyoop