jorge858

.12 nova normal engine when new have pinch feeling at the top ,

What would cause after about 3 gallon for the engine too have 2 pinch when you spin the flywheel go up get stuck normal and then stuck again before piston coming down??

30Tooth

iTrader: (1)

Do the crank just spins effortlessly when the piston is stuck at the top dead center?Maybe its just play in the conrod.

Roelof

When you can turn the crankshaft a lot in the upper position before feeling a pinch again I would say a lot of play on the crankpim. You can see it when removing the engine backplate.