Yeah that makes no sense at all, and through my mindless page searching through this thread never saw anyone ever mention trying one.

 

I checked my comp the other day cuz it was smokin i got 120. So i figured it ran i was ok. so i went for a ride on it then i got home lett it chill. then i got 90 so i put a little oil in and it went to 120. but it still runs, GOOD or BAD

 

that makes zero since to me, but at the same time that explains the smoking issues. which ive been able to avoid so far

 

whats the cylinder and rings like?

 

i dont know but i looked thru the sparkplug hole and it looked burnt up but i think that was oil i put in

 

i see, i had the same problem with my sled this winter, but, cold it had 120 psi in one cylinder, and after a rip up the field and back, that same cylinder would go to 25 psi if that, while the other was running strong. ripped the engine down to see what was wrong with it because i figured it was the rings, or the cdi box because the spark wasnt overly too strong. but took the piston out and the skirt on the carb side was completely gone! so i would check the piston for sure.

 

If you go back in that link I posted, mjlar94 had one and said it looked pretty much like the stock cam.

 

My buddy had one that you could just about set an empty beer can on the kicker and it would go down, but it still ran strong.

When you do a compression check, make sure the throttle is wide open. Better yet, take the carb off the head so the air filter isn't restricting airflow.

 

ill try that but is there a way to check the pistion without taking off the head

 

just going through some of my pics, and came across these i have taken last winter riding. i even have the helmet that was an option when you bought the bike back in the 80s