Fuelab and fuel pressure - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 8 (permalink) Old 12-20-2009, 09:39 PM Thread Starter
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Fuelab and fuel pressure

I got the 5/8 pick up and fuelab installed. Took a few key cycles to get pressure, and then it went to 60 and fired right up. As soon as you shut it off, fuel pressure drops to 20, and then slowly to nothing. Same thing with just the key. Turn the key on, it goes to 60, but once the pump turns off, right to 20. No leaks. Is this normal?

03 E-350 7.3, forged rods, exhaust ported heads, comp 910's, 38R/47, 4.10LS, stealth twin pumps, 300cc hybrids from Swamps, h-11's, racerx trans and TC, Swamps tunes, water...
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post #2 of 8 (permalink) Old 12-20-2009, 09:52 PM
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Re: Fuelab and fuel pressure

normal.
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post #3 of 8 (permalink) Old 12-20-2009, 10:01 PM
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Re: Fuelab and fuel pressure

Normal for mine as well.

Dave

'08 F250 6.4/Torqshift Spartan 310EL, Flo-Pro 4", White_monster air intake, RCD 4-link, RS9000's 584/1330
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post #4 of 8 (permalink) Old 12-20-2009, 10:08 PM Thread Starter
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Re: Fuelab and fuel pressure

OK, thanks. Could have sworn it held more pressue before.

03 E-350 7.3, forged rods, exhaust ported heads, comp 910's, 38R/47, 4.10LS, stealth twin pumps, 300cc hybrids from Swamps, h-11's, racerx trans and TC, Swamps tunes, water...
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post #5 of 8 (permalink) Old 12-21-2009, 02:00 AM
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Re: Fuelab and fuel pressure

Fuel lab has no internal check valve to hold pressure, which is fine for our trucks.

BTW..... how loud is your pump?
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post #6 of 8 (permalink) Old 12-23-2009, 02:58 PM
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Re: Fuelab and fuel pressure

How often do you need fuel pressure to fire injectors while the ignition is off?

Sorry for the SA remark...I just had to.

Eric
96 F-350 CC Dually
300/100% B codes, Stealth dual pumps, H2E, BTS trans, ARP head studs, Comp 910 valve springs, Tyrant Tunes
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6.0 IC, Fuelab electric fuel pump, NAPA 6637 air filter, ITP Overboost Annihilator, AeroTurbine 4040XL
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post #7 of 8 (permalink) Old 12-23-2009, 03:19 PM
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Re: Fuelab and fuel pressure

While talking with Fuelab the other day, it was reccommended that I run a check valve in my fuel system with their pump. Right or wrong, that was what was told to me. What do you guys think? Is it something we should or should not be running to optimize our fuel systems?

99.5 F250 cclb 4x4...modded, but looks stock
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post #8 of 8 (permalink) Old 12-24-2009, 09:05 PM Thread Starter
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Re: Fuelab and fuel pressure

Quote:
Originally Posted by 907DAVE View Post
Fuel lab has no internal check valve to hold pressure, which is fine for our trucks.

BTW..... how loud is your pump?
Loud is relative, way louder than the walbro it replaced, although that thing was whisper quiet. Even quieter than the stocker. You can definitely hear it, but it is not obnoxious or anything. If the engine is running, I have to get down close to it to hear it over the engine.

Quote:
Originally Posted by racehauler View Post
How often do you need fuel pressure to fire injectors while the ignition is off?

Sorry for the SA remark...I just had to.
No #### sherlock. But since the stocker and the walbro held pressure in the system for a while, I wasn't sure if not holding pressure was normal. The lack of a check valve makes perfect sense, though.

03 E-350 7.3, forged rods, exhaust ported heads, comp 910's, 38R/47, 4.10LS, stealth twin pumps, 300cc hybrids from Swamps, h-11's, racerx trans and TC, Swamps tunes, water...
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