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Old 03-05-2012, 11:20 PM
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Diesel fuel leak

Hey guys just wanted to pass some info out there.Don't know if this topic has been talked about.Last 3 weeks I have gotten phone calls from four friends about one a week that they have a diesel fuel leak.Once truck sits a puddle forms under engine driver's side.The leak is coming from bad oring under fuel regulator plate.I think that ford wants you to take apart the fuel regulator plate and clean plunger and inspect oring every other fuel fitler change.Just throwing info out there.
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Old 03-05-2012, 11:23 PM
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What year trucks and what engine?
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Old 03-06-2012, 02:25 PM
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The years where from 2003-2006 6.0 powerstrokes.
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Old 03-06-2012, 04:34 PM
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I would suspect that some sort of user service has been performed and a used o-ring NOT replaced (or poorly reseated or compromised during reinstallation) since I am unaware of any advice for an o-ring replacement on a filter-change basis. Since the fuel pressure regulator "blue spring" update is in fact a highly recommended upgrade to provide sufficient fuel pressure to the injectors and since there are sources for just the spring (or some who will perform the so-called "BB" modification to achieve the effect of the longer blue spring) the keyhole o-ring might not get replaced resulting in a poor seal at a critical fuel delivery point.

Just a speculation but this is a point that matches the location of the leak and an often encouraged user-service upgrade.

Jonathan
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Old 03-06-2012, 05:01 PM
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Actually three of the four trucks are same owners since new.The gasket just flatten out due to heat and age.Was just throwing info out there to check gasket before it fails.
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