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Old 04-29-2021, 07:01 PM
Elgineddie Elgineddie is offline
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Water in Oil

Well I've been chasing this water in the oil gremlin for a bit. Mainly because it seems to come and go. I drain/flush/refill, and it stays clean for a few outings, then, like today for example, I've only run it 2x on new oil, I checked the oil before starting and it's clean, I run it for a few minutes, check the oil and find milk in the crankcase. Never a lot; maybe enough to raise the level on the dipstick 1/8 to 3/16".

So far I've performed/checked:
  • Water jacket pressure test = passed; approx 1 hr @ 20psi
  • Compression test (dry) = (1,2,3,4) 118, 110, 112, 124
  • New AntiSiphon loop = new and mounted as high in the galley sink cabinet as possible

Other info:
Engine is, I believe, a 1977 (071377 code).
Engine always takes ~15-20 seconds of cranking to start COLD. I ALWAYS have the water turned off until after she fires and runs for 10 seconds, and I ALWAYS turn off the water and run it for 20 seconds before killing the engine. Runs great. Sounds great. No leaks anywhere on the engine or water pump.

Before I pull off the side valve cover, pull the head, or buy a new water pump, I have some questions...
  • How do I know if the water pump oil seal has failed?
  • I noticed the aft spark plug (#4) was wet with what looks to smell and look like water. Indication of a bad head gasket?

Thanks in advance. I promise I read the many posts on this but I can use some clarity because when it happens to you, you become myopic. Apologies.
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