Increase fuel presssure??? - Ford Powerstroke Diesel Forum
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post #1 of 20 Old 01-21-2012, 09:08 AM Thread Starter
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Increase fuel presssure???

Is there anyway to increase fuel pressure on a 99 f-250 7.3 without using a programmer? I had read a thread on here earlier about putting a bb behind some spring but i can't find it anywhere on here now. Any suggestions would be greatly appreciated thanks
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post #2 of 20 Old 01-21-2012, 09:48 AM
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You can change the spring in the FPR.

That said... you'd be better off doing the Hutch/Harpoon and the Riffraff FRX. (FRX comes with 3 different springs for adjustable pressures.)

Those 2 mods top my Tax-Return Mods Checklist.
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post #3 of 20 Old 01-21-2012, 09:49 AM
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post #4 of 20 Old 01-21-2012, 10:31 AM Thread Starter
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what does the fuel rail crossover achieve? sorry but i'm kinda diesel engine stupid but i'm a learnin
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post #5 of 20 Old 01-21-2012, 11:15 AM
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Quote:
Originally Posted by 7.3joker View Post
what does the fuel rail crossover achieve? sorry but i'm kinda diesel engine stupid but i'm a learnin
Quote:
The FRx was made to solve the 'deadhead' fuel rail issue on the 99-03 Powerstroke engine by connecting the two heads and allowing a metered return you allow the air another return path, rather than forcing it through your injectors. This product was designed to eliminate the need to cut your return line and use compression fittings, so that it is a true bolt on system. We have also machined the FRx block to provide from stock to 72 psi of fuel pressure depending on which spring you choose to install it with. By using our kit and eliminating the air in the fuel system you will experience smoother, quieter idle, less cackle, and better throttle response among other things. You will also be increasing your injector life as well.
..............
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post #6 of 20 Old 01-21-2012, 11:35 AM
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How do you know how much pressure you should have with the FRX system installed, i.e. which spring to use?
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post #7 of 20 Old 01-21-2012, 04:39 PM Thread Starter
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Would a gauge hooked up to the drain tube on the fuel bowl work to get an accurate fuel pressure reading if I adjusted the spring in the fpr?
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post #8 of 20 Old 01-21-2012, 05:01 PM
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A chip doesn't increase fuel pressure.
Basically, you run which spring works best for the truck.
There is a fitting on the fuel bowl for pressure gauges.


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post #9 of 20 Old 01-21-2012, 05:04 PM Thread Starter
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But what I did would sufrice. Correct? Got a pic of where the fitting is?
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post #10 of 20 Old 01-21-2012, 07:14 PM
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if you are using the bb there have been reports of people damaging the orings because fuel pressure was getting to high. Just spend a little cash and do it correctly.
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