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water in oil question

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Old 04-15-2019 | 06:45 PM
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Man I battled that last year and finally removed the heads after trying all the common stuff. Machine shop found that one of the exhaust ports near the valve was rusted through. These were “088” heads. Guy said that is very common. Mine was a ‘97 no salt motor. Good luck.
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Old 04-15-2019 | 06:46 PM
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What would people suggest in order of checking first to last please with what I have given as info.
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Old 04-15-2019 | 06:49 PM
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Originally Posted by sonicss42
Man I battled that last year and finally removed the heads after trying all the common stuff. Machine shop found that one of the exhaust ports near the valve was rusted through. These were “088” heads. Guy said that is very common. Mine was a ‘97 no salt motor. Good luck.
How did you finally figure it out that it was in the heads
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Old 04-15-2019 | 07:56 PM
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A smoke machine into the oil dipstick tube.

Prob intake manifold gaskets at the water ports are shot or the the water cooling port flange area at the heads are eroding away.
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Old 04-16-2019 | 07:19 AM
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Originally Posted by TYPHOON
How did you finally figure it out that it was in the heads
I tried everything else, intake manifold and gaskets, replaced the CMI’s and everything already posted here or will be posted. Pulled heads and set them on the bench looking for possible bad valve guide or seat. Poured lacquer thinner in each ports and sure enough one would drain down. That when I asked machine shop to pressure test the head. He called me with his findings and bought new head from him. Had him set it up to match the others. Problem solved.
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Old 04-16-2019 | 08:27 AM
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Randy did u pull the stat when u winterized??I have seen them crack inside the lifter galley,,,just a thought
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Old 04-16-2019 | 01:50 PM
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[QUOTE=lightspeed;4682361]Randy did u pull the stat when u winterized??I have seen them crack inside the lifter galley,,,just a thought[/QUOTE ] no I did not but I put a new one in last week
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