t hatcher

when i come in to the pits during a race and my pit guy fills my truck it runs super fat for about two laps then bam fine again. what can cause this?? thanks

Jason Halvorson

iTrader: (22)

you low end is rich...when your in the pits your engine is cooling down to fast cause of the rich bottom end and then after running for a bit it warms up again....

Jason Halvorson

iTrader: (22)

sorry double post

magbarn

iTrader: (6)

Another overlooked factor is make sure you tune your engine for half-tank. You will run richer when the tank is full and you will run leaner as the tank runs out. Agree with jason though, sounds like your bottom is rich.

xlgraphicspro

iTrader: (5)

I think it's because Ronnie messes with your truggy when you not looking.