Im working on debugging a recently aquired 83 RM 250. some times when i try to start it it kind of backfire\farts. it starts right right up most of the time , one or two kicks. it runs well but it dose not have the power that i think it should have, weak bottom, fair mid that tappers off fairly fast. The compression is good at 210 psi. Im working on jetting, runs a bit rich but im gaining on it.
my ? is this , could the back fire be happening because the timing has slipped and is now retaded and could it cause the lack luster performance.
BTW im running an 82 head and cyclinder. This is not a power valve motor.
Id love to hear your ideas :clue:
thanks Bill
my ? is this , could the back fire be happening because the timing has slipped and is now retaded and could it cause the lack luster performance.
BTW im running an 82 head and cyclinder. This is not a power valve motor.
Id love to hear your ideas :clue:
thanks Bill