Decoder Ring Specialist
Join Date: Aug 2011
Location: Clinton, MT, US
Thanked 371 Times in 327 Posts
iTrader Score: 0 reviews
See if you've got someone who has an advanced scan tool or MM or similar you can plug in to watch the rail pressure. I'm thinking three possibilities (kind of in order of likelihood, FCA and a popped relief valve are both about as likely, but it sounds more like an FCA) - FCA on the pump, popped relief valve, or restricted fuel filter. If it's the FCA you can have RP all over the shop or stuck high. If it's the relief valve, it'll be fine/normal, and then the thing unseats and it can't make pressure. restricted fuel filter usually won't clear up and she'll be gutless as all frig but idle fine.
2011.5 6.7L HO 3500 4x4 ST Crew LB 3.73 SRW Rear 68RFE H&S MM w/ Custom Tuning, B&W+Companion
60 Gal RDS Tank/Tool PacBrake Bags
2012 Fuzion FZ305 35' Toy Hauler (no, the Ford does not pull this...)
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