bad could a - Ford Powerstroke Diesel Forum
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Old 06-30-2012, 11:01 AM

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bad could a

Could a bad FMIC fill my crank case up with diesel or make diesel leak into it ?
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Old 06-30-2012, 11:21 AM
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Nope, but a leaking injector can. (if it can, someone will come along and correct me on this)

Found this:
"A leaking upper injector o-ring can cause this. If you remove the lines from the filter housing, the ones going to each head, you can pressurize one at a time. It should hold pressure. If not, then that is the culprit bank of cylinders.

If you remove the valve cover and pressurize the fuel system, look at the base of the injector for signs for fuel coming out between the injector and the head. Use air pressure so that you get bubbles..sometimes makes it easier. "

Here is a thread on fuel in oil.

Fuel in Oil - Ford Truck Enthusiasts Forums

Last edited by amdriven2liv; 06-30-2012 at 11:45 AM.
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Old 06-30-2012, 03:12 PM
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Yep amdriven2liv is correct. Your problem is most likely a bad injector or bad injector o-ring(s). It is not your FICM. The advice above on tracking it down was good advice.
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