It all started with a plugged spark arrestor. The bike would idle but wouldn't go had little to no power. After removing the spark arrestor it ran great for about 2min the it would die under load. After going through the carb 2 times I still had the same issue. i checked dry compression and had 60psi. So now ive installed new top end complete and still have the same problem. It almost feels as if its leaning out. I have not replaced the spark arrestor which Im going to try tonight. Seems to flow fuel from the tank to carb . I read somewhere that removing the spark arrestor can cause a lean condition. Its definitely starving for fuel. Any thoughts or insight would be greatly appreciated.

 

So what's the new compression number? Is this a 2 or 4 stroke?

 

Ill check compression tonight, its a 2 stroke.

 

yes...need to confirm compression...thx

 

If the spark arrestor was plugged, what about the rest of the exhaust system?