When to change a Fuel Pump - Ford Powerstroke Diesel Forum
 
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post #1 of 8 Old 01-29-2014, 06:12 AM Thread Starter
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When to change a Fuel Pump

So I have a question, how do you guys known when to change your fuel pump. Outside of the obvious "it broke", what kind of miles have you guys put on them. I have 249k on my original pump and I do have a small fuel leak that I am going to tackle this weekend. The question, do I also change the pump just to make certain I don't have to do this anytime soon?
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post #2 of 8 Old 01-29-2014, 06:34 AM
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Originally Posted by Linc1 View Post
So I have a question, how do you guys known when to change your fuel pump. Outside of the obvious "it broke", what kind of miles have you guys put on them. I have 249k on my original pump and I do have a small fuel leak that I am going to tackle this weekend. The question, do I also change the pump just to make certain I don't have to do this anytime soon?
Check the fuel pressure at the shrader valve on the fuel bowl. You can use a pencil type of air gauge for that. Optimum pressure is between 55 and 65. I think 65 is factory set. The gauge will piss out fuel so make sure you got glasses on.

JackT
1996 ECLB 4x4 81k miles
DIY 6637, Hpx, E4OD
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post #3 of 8 Old 01-29-2014, 11:20 AM Thread Starter
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Thanks for the reply, I know how to test it. What I am wondering is how long on average these pumps last. I could test it today and have it be good, then it could break tomorrow. Since I have to fix a couple of leaks and I am going to tear off the filter housing, replace the lines, and the banjo fitting washers. I was considering a new pump as well but don't want to spend $115 if I don't have to. But maybe 250k is enough miles that I shouldn't even consider leaving it in place.
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post #4 of 8 Old 01-29-2014, 11:28 AM
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If I was going to go through all the trouble of pulling the fuel bowl and messing with the banjo bolt I would bite the bullet and change the pump too, as well as all the o-rings in the fuel bowl.

JackT
1996 ECLB 4x4 81k miles
DIY 6637, Hpx, E4OD
First boat Arcturus
2008 Kubota L-39
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post #5 of 8 Old 01-29-2014, 11:39 AM Thread Starter
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I did already buy the O-rings for the filter bowl as well as a new drain valve just in case. Since I am not 100% certain of the source of my leak, I figured cover all bases.
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post #6 of 8 Old 01-29-2014, 01:05 PM
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Your fuel leak could be from the pump's weep hole on the bottom near the base, so take a look. I'm of the "if it ain't broke ... " camp. I've had pumps last a long time (190k and stll going) and not last at all (less than 25k), and somewhere in between. I've had the low side fail (usually leaks) and high side fail (no leak but, no fuel). Cheers!

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SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.
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post #7 of 8 Old 01-29-2014, 01:06 PM
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Smart thinking. Good luck, if you pull the pump there are quite a few write ups that should help, breaking off the shaft and displacing the valley o-ring come to mind as potential drawbacks. I know some put a gob of vaseline or something on the valley o-ring to keep it in place when jiggling the new pump in.

JackT
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DIY 6637, Hpx, E4OD
First boat Arcturus
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post #8 of 8 Old 01-29-2014, 03:52 PM
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A write up would be awesome!!

My truck has a fuel leak as we'll and looking at changing pump while there!

My deal is I haven't really checked fuel bowl drain orings.

I cleaned all the diesel from valley and going to check tomorrow.

i has a diesel.


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