water in the oil, not in the cylinders on Mercruiser 350 cc 5.7L small block

by Mike
(Cape Cod)

My port engine started well but had a clicking sound when I started it for the 1st time this spring. I shut it down and my neighbor suggested it might be a broken valve spring. The next time I started it a revved it a bit and the clicking went away but it started to run rough. I now seem to have water or coolant in the oil but not in the cylinder. Scratching my head and can't figure out where the water/coolant is entering from. Elbows and manifolds ruled out because again, no water in the cylinders. Any ideas out there?

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