Hi,
my new 4.5 HP petteroid has just after 2 working hours much carbon deposit in silencer. The engine even smokes when it runs under no load.
Can anyone tell my how to fix this problem? First what I'll do is to check the opening pressure and spray of the injector. Maybe the the delivery time of the injection pump is wrong, too.
I realized that the compression is low compared to my Changfa, but the engine starts after the first attempt.
Can the low compression also be a cause for the massive carbon buildup? Should I remove some of the gaskets between the cylinder block and the crankcase to get a higher compression?
Michael