Search results

Not really. Yours sounds like a typical old school exhaust manifold/header flange leak, that most of us have dealt with too many times, on old gas engines. If not exhaust manifold I would take a wild guess at blown head gasket or burnt exhaust vale. Does the power seem to pulse/miss from a weak...

Sounds like how the leak I had on my Cat acted. It was such a heavy knock, and only under load that I thought it was a main bearing at first. After a cold start you have a little time to quickly run your fingers around the manifold and feel for the puff of air before it gets too hot. Once I felt...