Xray50

Sh--!!!! Starter went THUNK!!!! Pulled plugs. #4 hole full of water. Cranked engive over to blow water out. Put plugs back in, engine ran fine! 2 days later, THUNK! pulled #4, water again. Engine is 540 BBC with IMCO exhaust. Any suggestions before I start pulling parts off?

tmdog

Intake or head gasket.

Xray50

Sorry, that was #8 hole.

Xray50

Intake or head? Not exhaust side?

hoozeyurdaddy

does the imco exaust have bolt on elbows? if so, go there first and replace the gasket.

Xray50

Thanks Hoozey, will do that first.

Griff

Try a riser gasket first. Imco flows water through the manifold riser like stock merc iron manifolds.

Xray50

That makes sense. With the angle of the engine the water ends up in #8 hole..... going to pull the riser and see if it's round or oval then order one from Imco.

Xray50

Exhaust pulled and pressure tested. Imco manifold and riser is good. Pulling intake manifold Sunday. Sure hope I find a blown gasket.

Edward R. Cozzi

Is there water in the oil?