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post #1 of 10 (permalink) Old 09-22-2011, 01:02 AM Thread Starter
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fuel system upgrades

Hey guys I finally put a fuel pressure gauge in the truck, and like I thought at wot fuel pressure drops in a hurry to 4 psi. So I'm wondering what my options are for replacement/upgrade. Currently run swamps 58v ficm, cai, exhaust and matts srl tune. No current plans for injectors but maybe a set of 190,s or so down the road. But what are your suggestions on what way I should go with this. Thanks for your opionins

Sold puller-1997 f-350 12 valve 913 p-pump, big charger, big fuel, SBC, and so on
Puller-1979 Ford S/B, 60 front, 10.25 rear, 5.13 gears, ockers, 503 BBF, C6 with 2500 stall
DD-2005 F-250 c/c s/b 6.0L lariat, 6" lift, 35"m/t's, 18x12's, 58v ficm, gearhead tuned, 6.4 banjo's, raptor fuel system, 5" exhaust and a CAI
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post #2 of 10 (permalink) Old 09-22-2011, 02:42 AM
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Re: fuel system upgrades

Sorry not a direct answer to your question but typically we run the factory pump and a regulated return line kit

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post #3 of 10 (permalink) Old 09-22-2011, 05:23 AM
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Re: fuel system upgrades

Have you heard about the blue spring upgrade? Its an updated fuel pressure regulator spring that puts fuel pressure at the bowl at around 65 psi. If you are getting down to 4 psi, I would definitely say either your spring or fuel pump is bad.

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post #4 of 10 (permalink) Old 09-22-2011, 01:14 PM Thread Starter
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Re: fuel system upgrades

If he spring was weak woundnt the pressure lower all the time. I would be more apt to think the supply pump. But that's why I'm asking questions also

Sold puller-1997 f-350 12 valve 913 p-pump, big charger, big fuel, SBC, and so on
Puller-1979 Ford S/B, 60 front, 10.25 rear, 5.13 gears, ockers, 503 BBF, C6 with 2500 stall
DD-2005 F-250 c/c s/b 6.0L lariat, 6" lift, 35"m/t's, 18x12's, 58v ficm, gearhead tuned, 6.4 banjo's, raptor fuel system, 5" exhaust and a CAI
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post #5 of 10 (permalink) Old 09-23-2011, 02:17 AM
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Re: fuel system upgrades

id say its the pump. and if its the pump id put an airdog on it vs a stocker if your plans are to go bigger one day. i would think if the fuel pressure was that low you would have popped injectors by now or atleast they would be studdering quite a bit from the lack of basically no fuel. did you double check the install of the pressure gauge to make sure its all correct. not doubting the work just depending on what kinda gauge ie glowshift they have problems with the senders

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post #6 of 10 (permalink) Old 09-23-2011, 09:35 AM
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Re: fuel system upgrades

What are your pressures during normal driving??


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post #7 of 10 (permalink) Old 09-23-2011, 09:56 AM
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Re: fuel system upgrades

If it's the pump I would suggest an airdog.

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post #8 of 10 (permalink) Old 09-23-2011, 12:31 PM Thread Starter
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Re: fuel system upgrades

Under normal driving it stay right about 50 psi. I think that is why I haven't had injector issues. I think for right now I may just buy an airmotive pump and regulator then do the banjo bolts and the spring.

Sold puller-1997 f-350 12 valve 913 p-pump, big charger, big fuel, SBC, and so on
Puller-1979 Ford S/B, 60 front, 10.25 rear, 5.13 gears, ockers, 503 BBF, C6 with 2500 stall
DD-2005 F-250 c/c s/b 6.0L lariat, 6" lift, 35"m/t's, 18x12's, 58v ficm, gearhead tuned, 6.4 banjo's, raptor fuel system, 5" exhaust and a CAI
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post #9 of 10 (permalink) Old 09-23-2011, 12:38 PM
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Re: fuel system upgrades

With the Airmotive regulator you can do away with the spring. Your regulator willset the pressures not the factory spring. Do a return regulator set up for more consistant pressures.
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post #10 of 10 (permalink) Old 09-24-2011, 01:49 AM Thread Starter
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Re: fuel system upgrades

Well i ended up going with a raptor 150 high pressure pump kit, has a max of 75 psi, and i also picked up a Jegs/wix fuel filter water serparator that flows 40 gpm and it filters to 7 microns. Now just going to look into upgrading the banjo bolts.

Sold puller-1997 f-350 12 valve 913 p-pump, big charger, big fuel, SBC, and so on
Puller-1979 Ford S/B, 60 front, 10.25 rear, 5.13 gears, ockers, 503 BBF, C6 with 2500 stall
DD-2005 F-250 c/c s/b 6.0L lariat, 6" lift, 35"m/t's, 18x12's, 58v ficm, gearhead tuned, 6.4 banjo's, raptor fuel system, 5" exhaust and a CAI
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