After only 2-3 hours , my iame x30 starts to run like shit and won´t rev at all. And when I tear down the tillotson carburetor, the membran is deform like on my pictures. Is this just normal behaviour after only 2-3 hours, or could something else in the motor, be the cause of it ??
When the problem appears, i´m noticed that its a little wet from gasoline around the screws at the top(carburetor), same goes for all the gaskets in the “sandwich” construction(carburetor), they are all a little wet from gasoline, but all the screws are tight.
I´m just a club driver, so no high levels at all. The motor revs. perfect 16k rpms, untill this happens to the carburetor, then I do a rebuild and the motor runs fine again, 2-3 hours.