Fuel Pressure
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Mountain Pass
Joined: Jan 2016
Posts: 248
Likes: 1
Fuel Pressure
Is it normal for fuel pressure to fluctuate a pound or 2 at idle? I'm not sure but I think my gauge fluctuated a bit today while stopped at a stop sign dropped a pound or 2 then came right back up to 60 psi not sure if it did it not because I just caught it at a glance. Got the blue spring update with the adjustable regulator from sinister. fuel pump is about a month old. Trucks an 03 studded and deleted. Thanks
Fleet Mechanic
Joined: Feb 2007
Posts: 1,652
Likes: 79
From: Mooresville, NC
45-55 psi is the spec...........that "blue spring" is adding about 5-10 psi.........if you were running high without the blue spring, I'd be checking the return lines for restrictions.....
. Probably a big coincidence but the last time I seen that my fuel pump went out on me about a week later so you understand why I got a little concerned lol
Fleet Owner
Joined: Nov 2003
Posts: 27,881
Likes: 3,595
Early on Ford came out w/ a statement that up to 75 psig is fine. After that, there was a brand of a regulator spring (can't recall the brand name right now) that enabled 100 psig pressure. No one ever connected any problems to running that high, but I certainly never wanted to. 65 psig is a great point to run at IMO!
Thread Starter
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Mountain Pass
Joined: Jan 2016
Posts: 248
Likes: 1
Early on Ford came out w/ a statement that up to 75 psig is fine. After that, there was a brand of a regulator spring (can't recall the brand name right now) that enabled 100 psig pressure. No one ever connected any problems to running that high, but I certainly never wanted to. 65 psig is a great point to run at IMO!
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RideDiesel88
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