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Power Strokes
6.4 Aftermarket
Fuel pressure issues
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[QUOTE="madman1234509, post: 426027, member: 3910"] Id get a lift pump gauge on the thing and throw it in the cab for a bit to see what its doing. If it holds, then you know for sure its the hpfp. If it drops, then you know its the lpfp. With your age/mileage it could be a combination of both. Its hard to say and just throw money at one or the other without diagnosing... Also you may be able to check amps being drawn on the lift pump. I believe on here or PSA there was complete brand new stock fueling a guy was trying to sell. Lift pump, filters, lines, injection pump, all from ford still in packagine for 1200 bucks. Even if you only want the lift pump you could keep it, sell the other stuff and make money back. I know a new lift pump from ford is 600. All lines are a few hundred, filters are a bit, and a hpfp new is 1000-1200 [/QUOTE]
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Fuel pressure issues
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