New Problem!? Water in Oil?? - Ford Powerstroke Diesel Forum
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Old 10-15-2013, 09:40 AM
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New Problem!? Water in Oil??

Looks like my fuel pump wasn't the only problem...

The truck has been running really rough. Turns out I only had 20 psi of fuel pressure. so I put in a new fuel pump...still ran rough...drained out all of the old diesel and put in new diesel...still ran like crap...revved it up to about 2500 (which was full throttle) and it suddenly died...now it won't restart. I read on the forum to check the HPOP reservoir...i did and noticed the oil is kind of milky.......

now what? This truck is driving me nuts...even with a bit of water in the oil, why would it no longer run? before, when it was running, it sounded like it was only running on a couple of cylinders..
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Old 10-15-2013, 10:00 AM
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Diluted oil -> lower injection pressure -> running problems.

Could be injector cups / O-rings (wait for more info from those better informed), oil cooler leak, head gasket.
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Old 10-15-2013, 10:22 AM
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Thanks! That's what I was thinking, well, oil cooler and head gaskets...I don't know how to test either one though (at least on a diesel)
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