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View Full Version : rejetting 250ex



williamc250ex
11-10-2007, 09:14 PM
i was wondering if i need to rejet my 4-wheeler?All that is on it is a fmf powercore4(slip-on) and a k&n air filter?

ohsobad_chevy
11-10-2007, 11:08 PM
Yes, the changes you mentioned would call for re-jetting. ;)

williamc250ex
11-11-2007, 08:38 AM
well i talked to the honda dealership and they said as long as it ran fine and didnt backfire flames out of pipe then dont mess with it?

11-11-2007, 08:41 AM
well flames would mean rich so how do they know its not lean? i say rejet it

williamc250ex
11-11-2007, 08:43 AM
well would it be fine if i ride it like 2 more times till i rejet?

ohsobad_chevy
11-11-2007, 10:51 AM
Originally posted by FoxHondaRider
well flames would mean rich so how do they know its not lean? i say rejet it

Flames are not a sign of being rich.......flames and popping is a sign of being lean. ;)

williamc250ex
11-11-2007, 03:55 PM
well i am jetting it jetted soon in about a week or tw0










2002 250ex
fmf powercore(slip-on)and a K&N air filter soon to have new razr tires

THETRU RYANNIES
09-12-2008, 04:16 PM
i have a 07' 250ex and i was wondering what your jetting it at my stock is main-95 pilot 42