Overheating

[Adogh87]

I just recently got the phantom 85cc v3 engine. Ive run a tank of gas thru it, im on my second tank, otw home yesterday i opened it on up and ran it full throttle maybe a quarter mile then decelerated to 15 maybe 20 mph after another quarter mile it shut off, i walked it a little ways then restarted it and it ran about a quarter mile and cut off again.. on my way to work this morning it cut off again. Im pretty sure its overheating, i just dont know why its overheating?

 

[Wrench]

CG love you long time but disappoint you in the morning

 

[cdeuce1988]

I also should mention that the cylinder jug MUST be retorqued to 144 inch pounds after every single heat cycle for at least the first 200 miles or you will have a lean running condition because it will be sucking in air from the bottom of the jug where it meets the bottom half of the motor.

It must be fully stone cold before re-torquing it...NEVER when hot or even still warm but totally cold.

Yeah I was gonna say he must have a air leak somewhere.