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Old 07-24-2009, 09:49 AM
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Fuel Pressure

Put a fuel gauge on my 02 7.3L powerstroke. Got 62# right away, but it bled off after less then 30 seconds. It stays at 60# while idling. It bleeds off immediately when I shut the truck off. I was thinking of doing the "BB" mod to increase the pressure. Is this enough pressure and do I have a problem with it bleeding off so quick?

Thanks,
Robert
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Old 07-24-2009, 03:05 PM
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Being the inpatient person I am, I went ahead and put the "BB" in and the pressure is now off the scale of the gauge I have,0-100psi. In fact the pressure goes to the brass rivet at the bottom of the gauge. Guessing that it is around 120-130psi. It also does not bleed off as much, it goes down to around 100 psi and has been there for nearly 30 mins. Is this too much?? Do I need to take the "BB" back out? Help please!!

Robert
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Old 07-24-2009, 03:55 PM
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After reading a dated tech file, it stated that the pressure should not be more then 70# psi so I took the "BB" back out and the pressure still stays around 80-85# psi, but when II turn the key off the pressure bleeds off almost immediately whereas the pressure stayed fixed with the "BB" installed. Should the pressure bleed off like this?? Any help will be greatly appreciated.
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Old 07-29-2009, 01:30 PM
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when it did not bleed down with the bee bee means maybe the spring was in crooked. The valve was not opening, forced closed. The bee bee may have been too much a shim but it still should of bled right down. even now with out the bee bee and at 80, leads me to think still not in the proper way with the spring.
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Old 07-29-2009, 01:34 PM
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Quote:
Originally Posted by melmount View Post
when it did not bleed down with the bee bee means maybe the spring was in crooked. The valve was not opening, forced closed. The bee bee may have been too much a shim but it still should of bled right down. even now with out the bee bee and at 80, leads me to think still not in the proper way with the spring.
I agree. I had mine shimmed for the longest, but came to realize that it wasnt needed. I am running stage 1 single shots, modded hpop, 38r turbo, and custom tuning. Idling at 59 lbs, and at WOT it drops very little.
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Old 07-29-2009, 01:58 PM
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mine was at 62 befor a mod. Its at 72 now. Runs better, less "cackle" Fromwhat i have read, some motors like extra pressure, some dont need it. Mine seems to like it.
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