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Have you checked the rubber gasket between the exhaust elbow and the exhaust manifold? (This was recommended by Brian as an early T/S check when I got the sooty substance in my coolant.) Btw, I ended up renewing the head on mine. Upon taking it off, it didn’t appear the head gasket was...

So complete disclosure. This boat was previously owned by a 96 year old, 3 War Vet. He was a B-26 bomber pilot over Germany...and he was German born, so imagine the internal conflict! He flew well beyond the normal 30 missions required (65 missions total), shot down twice over enemy lines and...

Yeah, good call. I replaced all the crush washers, so no issue there.

Talked to Brian last month but not since finding oil under the coolant cap. Perhaps I should link up with him again. Other symptoms... Starboard engine gets up to temp much faster than the port. Starboard settles at 195 deg....port settles at 180-85 F. Port runs quiet. Starboard runs rough at...

Thanks for post. I replaced my coolant last year and retorqued my head bolts last month at the same time I pulled the injectors.(before cleaning the inside of the coolant cap and subsequently finding oil under the cap). The torque specs were all good (no movement at 105 LBS). The injectors...

My Lehman Head Gasket This thread is very helpful. I have twin Lehman 120s and on my starboard engine, have continued white smoke at low to mid RPMs and black smoke at 2k and above. Found oil under my coolant cap after 6 hour trip (after cleaning cap before trip). I think this is symptomatic...