Help! Fuel filters being blown up! - Ford Powerstroke Diesel Forum
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Old 06-30-2008, 02:53 PM
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Help! Fuel filters being blown up!

I hope someone can help me with this. In January a new IPR valve was installed at a local garage and the truck ran well until three weeks ago when my son serviced it. The ususal oil and filter, air filter and fuel filter. Immediately after changing the fuel filter the o-ring got blown right out of the fuel filter. A second new filter did the same thing in a few more miles. These were both NAPA. At the sight of the second breakdown was an Auto Zone where he purchased their fuel filter. The transfer furel pump also died at this time. He installed the Auto Zone filter and fuel pump and the truck ran fine for three weeks and about 400 miles until today when the fuel filter again was pushed off it's mount by excessive pressure. Don't know where to look as I am not familiar at all with this diesel and he is 50 miles away. Can anybody help with this? Thank you, Tom
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Old 06-30-2008, 05:07 PM
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odd to say it but But either you cap is jacked and its loosening on you, or the Fuel Pressure regulator is clogged or something and its just creating excessive pressure.
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Old 07-01-2008, 12:34 PM
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FPR sounds like it is plugged or the return line is. Check the fuel pressure and report back. Normal is 40-65... anything more then 80 and the lid will have issues.
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Old 07-01-2008, 12:45 PM
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yep, return line is plugged...
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Old 07-05-2008, 09:16 AM
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Start with the simple stuff first as I haven't seen to many plugged return lines. The O ring has a bevel to it, if this is pointing up and inward the lid won't seal, or it may but not for long. I have also seen these plastic lids get warped. There are some that make billet lids but they are $$$ Check the above and get back with us.

NCH
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