Fuel Pressure Regulator Q
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Cargo Master
Joined: Sep 2004
Posts: 2,691
Likes: 6
Fuel Pressure Regulator Q
Is the regulator in our rigs vacuum operated? The diaphram on my buddie's old Buick ripped and his engine filled with gas. Can that happen in our trucks and should I replace mine?
Fleet Mechanic
Joined: Mar 2005
Posts: 1,603
Likes: 1
From: St Louis
When you take off the vacuum line and there is gas coming out is the typical replacement interval I have seen on line for these trucks. The trucks will run with the FPR leaking, and it will run rich with alot of smoke.
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Cargo Master
Joined: Sep 2004
Posts: 2,691
Likes: 6
In my buddies Buick, he said the cylinders filled with fuel and hydro-locked. This occurred at startup. His mechanic told him had he been driving it he would have bent rods and valves. Is that not a problem with our trucks?
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Cargo Master
Joined: Sep 2004
Posts: 2,691
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Post Fiend
Joined: Mar 2002
Posts: 19,402
Likes: 38
From: Bonita Springs FL
Never heard of a Ford getting hydrolocked with gas from the regulator. In fact, I think it's impossible because of the design. There is no suggested replacement interval, just do it when you have gas in the line and stop worrying about it.
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From: Ottawa, Ontario
Yeah.. I don't understand how it's even possible to literally fill an efi motor with fuel. How would all that gas get in there.. the tanks are lower than the engine and even if they're not in a car the fuel pumps shut off when the engine does.
