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red hot header pipe??
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Posted by: rdr55

is it normal for an 06 header pipe to get red hott on this quad? my buddy just got one and was telling me the pipe gets red. doesn't seem right to me, either timing or carb running rich? Thanks for any help.

Posted by: acesfull

I have a 05 and a 06 yfz450 and mine both do that, it is abosolutley normal. Put aftermarket exhaust on it and it won't do it anymore.

Posted by: crayfz

They come way to lean from the factory.
Put a bigger main jet in it.

Posted by: sampleez

that's normal. has to do with the material of the stock header.

and yeah they are jetted lean from the factory, so don't do anything to the bike without rejetting

Posted by: Quad18star

Like the others have said , they come way too lean from the Factory . They have a very thin header pipe and I believe the reason they are lean from the factory is because of pollution regulations in Calif . Tel your buddy to Bump up the jetting and add an aftermarket pipe .... the difference is like night and day !!!

Posted by: ommkevin

its lean but ok

save up ur money 4 an exhaust and then rejet

its ok 4 now

Posted by: Quad18star

quote:
Originally posted by ommkevin
its lean but ok

save up ur money 4 an exhaust and then rejet

its ok 4 now

^^^ What he said ... or just go to the local shop and pick up a couple jets . They're like $3 a piece or something like that !!!

Posted by: rdr55

Thanks guys,

what jets should i run then??

and also today we took it out and its bogging bad at idle and up too l/8, if we run with the choke on its fine, this just started today and we cant figure why it even started doing this