Quote:
Originally Posted by Mshotta
I thought that but I've had the top end off and piston and rings look fine.
How can I tell if its definitely a cg engine?
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If the piston and rings are good that leaves the valves or head gasket. When you had the head off did you try pouring gas into the upside down head to see if there was any leakage through the valves. One time I over oiled a foam air filter which caused a buildup of carbon on the back of the intake valve. A tiny flake of carbon came off and got stuck under the valve causing a loss of compression.