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View Full Version : troubles starting(posible jetting)



erskine
03-28-2009, 06:44 PM
just bought a fully build yfz450 and its got big bore, ported head, and stg 2 cams

its start with no problem push starting but trying the E start just doest start. its getting spark and fuel.

jet size in it was 164main 42 pilot

then we put a 55 pilot and still didnt fire but runs when push started