Originally posted by jon kay
I just bought a ys 140 (dingo) and started it for the first time today. The carb was frozen,wouldnt move, and upon dissasembly, had shavings in it. When i started it up it began backfiring like it was out of time, sounded like a rod knocking! Brand new engine. Has anyone experienced this?
Are those metal shavings from engine machining or plastic shavings from the fuel tank or elsewhere ?