fuel pump upgrade - Ford Powerstroke Diesel Forum
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Old 09-08-2009, 11:46 AM
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fuel pump upgrade

ok, so im lookking at this guide with the fuel pump replacement half way down. i have a few questions. Tims I/C Page example

1. why are there two pumps? is this standard on an SD? or is this just a performance thing?
2. does the return come out of the front of the heads only?
3. how do i know when the cam is in the 'up' position on the pump?
4. anything missing here?

i ask because i think my pump may be one its way out, and i run wvo. if the pump fails i would like to upgrade and use this in combination with DFA's method of switching between fuels. seems to me there may be a few added hours hooking up the new pump but for the cost and reliability it cant be beat as it will prevent future mechanical pump failures. i know some of you are thinking FASS, but i dont want to spend that much, not on this truck anyway.

Last edited by ridiculously_necessary; 09-08-2009 at 11:49 AM.
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Old 09-09-2009, 02:11 PM
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Old 09-09-2009, 03:41 PM
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the obs powerstrokes dont have 2 pumps.they just have one pump in the engine valley.i didnt know about the cam positioning thing when i did mine so i guess i just got lucky.
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Old 09-09-2009, 04:11 PM
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Unbolt the pump and bar over the engine until the pump stops rising, then the cam eccentric should be at the top.
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Old 09-09-2009, 07:32 PM
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great, thanks for the info.

i know we oinly have one pump, but do the SD's had two or just the one electric one? the one in the link has two, and im not entirely sure why unless its a performance/flow thing. did the guy add the second pump or did he replace one?

i saw 1/4m boy's post today and the pump that DFA put on for his diesel pump is by MSD. 45 PSI and only about $100.
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Old 09-10-2009, 01:08 PM
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SD's had 1 pump when doing a upgrade up to stage 2's just get a single SD pump..going big injs get 2
MSD pump won't work you need 60-65 psi with a load on it.
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