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Old 02-06-2019, 10:33 PM
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andrewwynn andrewwynn is offline
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Join Date: Jun 2015
Location: Racine, WI
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FPR/fuel filter should last 250-300,000 miles it's huge, when researching for my fuel system thread I found a dozen examples of somebody replacing the fuel filter which seemed to solve the problem to only punt the problem a few months because the real problem was a soft fail electric pump. When the pump gets old it will produce slowly less and less pressure and the symptoms mimic a failing fuel pressure regulator or clogged filter, neither of which is ever likely. At 300,000 miles it's more likely the 2nd or 3rd electric pump is wearing out than the fuel filter is clogged. (though it's at the cusp of about even odds the FPR could be failing)

If you get a dip in pressure that recovers under WOT (wide open throttle) i would suspect the FPR but if the pressure stays a little low under WOT I would suspect the electric pump.
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