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Recent content by daniel.stoltz

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    Mercruiser 3.0 water in oil and leak from manifold area

    Update on water in oil and cracked block. Jb weld on the block worked fantastically! Turns out the oil in the water was a blown head gasket. It was very visible. After jb weld, new head, intake gasket, exhaust elbow gasket, flapper, thermostat, and oil change I took her out and not a drop of...
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    Mercruiser 3.0 water in oil and leak from manifold area

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    Mercruiser 3.0 water in oil and leak from manifold area

    A crack in the manifold would 100% cause water in the oil. The intake valves would suck in water that's leaking into the exhaust. Check the exhaust riser gaskets and inspect the elbow also to make sure water isn't going past the gasket into the exhaust
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    Mercruiser 3.0 water in oil and leak from manifold area

    To my understanding this is where these all crack and are most likely external. Doing a good job prepping the crack and drilling a hole on each side of the crack to prevent spreading seems to work for most with jb weld. Most here will tell you if there's water in the oil then it's probably an...
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    Mercruiser 3.0 water in oil and leak from manifold area

    I'm going to report back in a few days after I jb weld that crack, replace the head, manifold, elbow, flapper and all the gaskets and hope to have good news for anyone else else that has similar concerns. Stay tuned
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    Mercruiser 3.0 water in oil and leak from manifold area

    I too have this same crack located just below the head about 7 inches in length. I do have water in my oil however given this is most likely a water jacket crack I suspect the water got in another way perhaps through the exhaust elbow and the water flapper was junk. I'm going to patch this crack...
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