Helper pump - Ford Powerstroke Diesel Forum
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Old 09-21-2007, 04:11 PM
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Helper pump

What is a good helper pump for the money? Would it help with stock injectors? My extreme tune seems same on top end as the street tune I thought maybe more fuel would help.
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Old 09-21-2007, 04:21 PM
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Your high pressure oil pump probobly isnt keeping up. Your fuel pump should be good enough with stock injectors.
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Old 09-22-2007, 01:18 PM
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Natrually, it had to be expensive.
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Old 09-22-2007, 01:54 PM
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It could be either one, you can always put a guage on it and see if either is loosing pressure. My fuel pressure was falling off and my high setting ran about the same as my low setting. I did these fuel system mods Shutterfly | View Shared Pictures for about $35 and did the FPR mod and all is better now. My fuel pressure was going from about 50psi to 0 when I stomp it, now it runs around 80psi and drops to about 50 when stomped.
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Old 09-25-2007, 03:07 PM
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I going to do the fpr mod this weekend and see if it makes a differance
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Old 09-25-2007, 03:10 PM
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It wont... You are running out of ICP.... Just a matter of fact... You can shim the regulator and it might idle a bit better but its not going to give you any HP...
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Old 09-25-2007, 03:13 PM
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Why would the fuel pressure drop at WOT and be higher at idle? Is there something I'm missing?
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Old 09-25-2007, 03:31 PM
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Quote:
Originally Posted by Lord Tauk View Post
Why would the fuel pressure drop at WOT and be higher at idle? Is there something I'm missing?
Couldnt tell you...But 90% of the people that do this report a smother idle and thats about it...

His issue with low power at the higher settings will not be helped by the FPR shim. He is not running out of fuel, he is running out of oil...
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Old 09-25-2007, 03:34 PM
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Yeah I gather his issue is CSI but Im talking about Alabama's posts.

Quote:
Originally Posted by alabamafrog View Post
My fuel pressure was going from about 50psi to 0 when I stomp it, now it runs around 80psi and drops to about 50 when stomped.
To me logicially, the fuel pressure should be more at WOT than at idle not vice versa as he reported, but maybe it's different our PSDs? I never looked at what I get for FP readings.
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  #10  
Old 09-25-2007, 03:36 PM
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No, because our injectors suck it out of the rails, and without a boost type compensating regulator the pressure goes down... Not to mention our fuel system (thanks FORD...) sucks...
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