wilsta
09-16-2007, 10:34 PM
My friend just bought a o4 yfz450 and it not running quit right. it popping and back firing out the pipe and has poor throttle response. i pulled the carb off to clean it, it was fairly clean.
could the jetting be off or the valves be out of adjustment?
It has a stock air filter with out the lid
pro circuit t-4 silencer
main jet is 180
pilot jet is 42
jet needle is set to the 4th slot
I don't know if the other jet matter but they are
starter jet 90
pilot air jet 100
accelerator jet 50
could the jetting be off or the valves be out of adjustment?
It has a stock air filter with out the lid
pro circuit t-4 silencer
main jet is 180
pilot jet is 42
jet needle is set to the 4th slot
I don't know if the other jet matter but they are
starter jet 90
pilot air jet 100
accelerator jet 50