Fuel pressure regulator
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New User
Joined: Feb 2004
Posts: 7
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From: Canton, OH
Fuel pressure regulator
Has anyone had a bad regulator on the low side? My truck is acting like it's not getting enough fuel during acceleration. It has a stumble for a sec or two, then runs fine. Changed the fuel filter, not getting a check engine light. I'm stumped.
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Joined: Apr 2002
Posts: 279
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Are you sure you only have 1 fuel filter?
My '86 Bronco has two. If you have a high preasure pump in the tank, then you should only have one filter. If you have a low preasure pump in the tank, and a high preasure pump on the frame, then look between the tank and the hi-preasure pump for a canister filter.
Another possibility is sediment in the tank, or a clog or kink in the fuel line between pump and fuel rail. (a kink in the return line will cause preasure to go up).
Have you checked fuel preasure?
My '86 Bronco has two. If you have a high preasure pump in the tank, then you should only have one filter. If you have a low preasure pump in the tank, and a high preasure pump on the frame, then look between the tank and the hi-preasure pump for a canister filter.
Another possibility is sediment in the tank, or a clog or kink in the fuel line between pump and fuel rail. (a kink in the return line will cause preasure to go up).
Have you checked fuel preasure?
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