Originally Posted by
Roelof
After break-in and a cool down period there is a little bit of grow in the piston, so the text time you fire it up a pre-heat is adviseabel but also a short run in proces could be needed to take away the grow. and beside that all I think you have to try other fuel.
Thanks roelof........... I'm using Odonnel Speed Blend Fuel 25%.
I checked the manifold......... Its very dark with lots of carbon build up inside the manifold.
My friend advice me to boiled the manifold and pipe later at home, and try again. I accepted his theory about engine backdraft and carbon build up.
However I'm worried the engine has problem with crankshaft or main bearing. The engine was brand new...... but it already took 2 piston sleeve in 1 month
