os40la
 

problem i have is that the engine runs fine for about 10 minutes smokeing good tnen it will put out less smoke an start to bog down an putting out less smoke i can let it idle for a few minutes an go back to full throtle an it will run agian for a few minutes any idles thanks

os40la
 

It could be going lean on you?

It could be that you do not have the top end rich enough?

It could be that there is a problem with your fuel system?

You could have too large prop on it? Use a 10-6

You could have it cowled in where its not getting enough air?

Good luck,

Jim

os40la
 

does the nedle adjustment need to be level with tank are does it need to be lower are higher than tank thanks

os40la
 

The center of the needle needs to be exactly in line with the center of the tank.

Jim

os40la
 

ok thanks the nedle is below the tank now i will put nedle with center of tank maybe that will fix it thanks