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Cat Man
Cat Man, Cat Engine Expert
Category: Boat
Satisfied Customers: 8672
Experience:  23 years Caterpillar Engine Experience
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I have a 3408 in a boat. Water in both exhaust manifolds and

Customer Question

I have a 3408 in a boat. Water in both exhaust manifolds and a little in the oil.
Removed the plugs on the exit of the exhaust manifolds - water came out both sides. When I put water in the header tank it comes out both of the exhaust manifolds with in a few seconds. First thought it was a head gasket but this comes out to fast - any ideas?
Submitted: 1 year ago.
Category: Boat
Expert:  Cat Man replied 1 year ago.

Thanks for asking your question. I will try and help you out.

If water is coming out of the exhaust that fast, I must suspect cracked heads. I am sorry. I wish I had better news. If it was a head gasket I would think the coolant would go into the cylinders and hydrolock the engine.

Please reply back if you need more help or have more questions. I am happy to assist.

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