Fuel Pump Shim.... - Ford Powerstroke Diesel Forum
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post #1 of 16 Old 05-25-2006, 11:12 PM Thread Starter
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Fuel Pump Shim....

I found instructions on how to do this, but they were on 94-97 PSD, mine is a 2k. Anyone know if these are the same?

TA

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post #2 of 16 Old 05-29-2006, 11:44 AM Thread Starter
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Well I did it, and OMG what a HUGE difference, idle is smoother, throttle response is very crisp, the truck really smokes under WOT, and the best thing about it is the big Ex will spin the tires with authority. :burnout

I shimmed the spring .067 I have not checked the pressure but I would guess it's around 65-70PSI. Eventually I will install an fuel pressure gauge under the hood.

Almost forgot...peak EGT's are down about 150 degrees.

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Last edited by gcop; 05-29-2006 at 01:04 PM.
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post #3 of 16 Old 05-29-2006, 03:16 PM
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SWEET! Glad to hear it turned out so well buddy. You and I need to go out to Baytown sometime and play with the ricers in the 1/4.
Hey I got back into town later than we had planned on so I'll give you a shout tomorrow.

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post #4 of 16 Old 05-29-2006, 03:32 PM Thread Starter
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No problem Alan, I have been a bit under the weather this weekend, so tomorrow would be better for anyway

Yeah we do need to make a trip to HRP, it's been a while for me.

Oh and other thing worked like a champ, I owe you there for sure.

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post #5 of 16 Old 05-31-2006, 11:03 AM
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Cool Pump shim

If you want to have some fun, usa #6 machine screw so you can turn the pressure up and down for fine tuning. I have found that 95psi and my fuel air seperator have dropped the EGT to 200+ degrees accross the board and widend the power curve like never before.

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post #6 of 16 Old 06-06-2006, 06:08 AM
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Quote:
Originally Posted by gcop
I found instructions on how to do this, but they were on 94-97 PSD, mine is a 2k. Anyone know if these are the same?

TA
Where did you find the instructions to to this? and has your mpg changed any?

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post #7 of 16 Old 06-06-2006, 10:32 AM Thread Starter
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Originally Posted by FLWHEELIN
Where did you find the instructions to to this? and has your mpg changed any?
MPG's are unchanged. I am currently doing a tech article on the FPR shim, it's easy. I should have it posted with pics by the weekend.

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post #8 of 16 Old 06-06-2006, 07:51 PM
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Cool Fuel pump shim

If you don't want to play with the shimming there are many places online you can buy a new spring and be done with it in one shot. Not everybody has a claim of what the new pressure is except Gillette diesel service. There spring is advertised to boost pressure up to 95psi. Mine was allready done to 95psi when I came accross there's. Raising the pressure and removing the air from the fuel will be the cheapest power you will do. Removing the air is the only mod I have done that increased power and milage, something every vendor say's there product will do. On top of that , your 7.3 will almost sound like a 6.0!!!

The Ex -box. Total RSD system. See what happens when you let attorneys run your Country!!!! There's nothing wrong with a Democratic society, we just need to get rid of Democrats. 2001 Excursion. 2003 Cobra Terminator all pumped up. Now this is fuuuuuun.

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post #9 of 16 Old 06-06-2006, 07:55 PM
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Does a fuel/air separator really make that much of difference in power and mileage? What's the cost? And does it change the sound of the engine that much?

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post #10 of 16 Old 06-07-2006, 04:10 AM
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i tried this mod on a friends truck. the only thing that changes was when he got on it the fuel filter cap kkept blowing off. what was i doing wrong


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