HFCM Problem - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 03-07-2013, 08:38 AM Thread Starter
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HFCM Problem

So I am running Matt's SRLXX and found that it's a little weak on the top end. I installed a fuel pressure gauge and found that at WOT my fuel pressure is dropping down just below 30PSI. Normal driving or anything less than half throttle the fuel pressure stays between 50-60PSI. The truck has 140K so I am going to replace the HFCM. But after doing some research I found that you can just by the pump and or the whole HFCM. Would it be better to replace the whole unit or take it off and just replace the pump portion? Thanks in advance.

Joe

2006 F350 XLT CrewCab 4X4
325/65R18
EGR Delete
Zoodad Mod
High-Idle Mod
Sinister Coolant Filter
ARP Head Studs W/ OEM Gaskets (Installed myself)
Upgraded Fuel Spring
Updated STC Fitting
Updated Oil Cooler Screen
Updated Dummy Plugs/Standpipes
6.4L Banjo Bolts
PHP Ficm Tuner
1/4 Mile 14.2 @ 93MPH

SCT Custom Tunes: MKM, Looney, SRL, SRLXX, Wildman and SPD w/ Early Lock up
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post #2 of 7 Old 03-07-2013, 08:51 AM
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A new fuel pump/HFCM will fix this issue. When I was shopping for an HFCM, I found that a complete Carter unit was only a few bucks more than just a pump, so I bought it.

The fuel lines require a special tool, it's not that expensive, the feed lines are 3/8 and the returns are 5/16. This tool is for ALL FOUR LINES! I thought I saw a clip on one line and destroyed the fitting. GRRRRR!!

Karl and his 2003 6.0

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post #3 of 7 Old 03-14-2013, 05:49 PM Thread Starter
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Quote:
Originally Posted by Karls03 View Post
A new fuel pump/HFCM will fix this issue. When I was shopping for an HFCM, I found that a complete Carter unit was only a few bucks more than just a pump, so I bought it.

The fuel lines require a special tool, it's not that expensive, the feed lines are 3/8 and the returns are 5/16. This tool is for ALL FOUR LINES! I thought I saw a clip on one line and destroyed the fitting. GRRRRR!!
So I got the fuel pump out, but destroyed one of the fitting on the tank side. What did you do to fix it. I called ford and they wanted to see me the line all the way to the tank and wanted almost $400. I was thinking of cutting the line and routing my own up to the pump.

Joe

2006 F350 XLT CrewCab 4X4
325/65R18
EGR Delete
Zoodad Mod
High-Idle Mod
Sinister Coolant Filter
ARP Head Studs W/ OEM Gaskets (Installed myself)
Upgraded Fuel Spring
Updated STC Fitting
Updated Oil Cooler Screen
Updated Dummy Plugs/Standpipes
6.4L Banjo Bolts
PHP Ficm Tuner
1/4 Mile 14.2 @ 93MPH

SCT Custom Tunes: MKM, Looney, SRL, SRLXX, Wildman and SPD w/ Early Lock up
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post #4 of 7 Old 03-14-2013, 06:06 PM
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I ended up trashing the upper left fitting as you are looking at the HFCM (fuel in). I went to Auto Zone, got some EFI rated rubber hose (that's what is in there so why not) and some EFI hose clamps. These clamps put more of an even load on the hose than a typical band clamp.

At any rate, get a razor, shave away at the end of the hose where it meets the steel line, install hose and clamps, and off you go.

I laughed when I read this because I know EXACTLY what you were feeling when you broke it and when Ford told you they wanted $400 for that stuff.

Karl and his 2003 6.0

Barefoot Accelerator Pedal
TRICO Force wiper blades
Yellow Military Aircraft Valve Stem Caps
Offensive "Stick Family" Decal
Big Ol'Honkin 1 1/4" Shank Receiver Hitch


WHAT!?! I was trying to list stuff that everyone else
hasn't already listed for their truck!




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post #5 of 7 Old 03-14-2013, 06:18 PM Thread Starter
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Quote:
Originally Posted by Karls03 View Post
I ended up trashing the upper left fitting as you are looking at the HFCM (fuel in). I went to Auto Zone, got some EFI rated rubber hose (that's what is in there so why not) and some EFI hose clamps. These clamps put more of an even load on the hose than a typical band clamp.

At any rate, get a razor, shave away at the end of the hose where it meets the steel line, install hose and clamps, and off you go.

I laughed when I read this because I know EXACTLY what you were feeling when you broke it and when Ford told you they wanted $400 for that stuff.

That makes me feel much better that I'm not the only run who has run into that problem. I'm gonna get it back together in the morning. Thanks.

Joe

2006 F350 XLT CrewCab 4X4
325/65R18
EGR Delete
Zoodad Mod
High-Idle Mod
Sinister Coolant Filter
ARP Head Studs W/ OEM Gaskets (Installed myself)
Upgraded Fuel Spring
Updated STC Fitting
Updated Oil Cooler Screen
Updated Dummy Plugs/Standpipes
6.4L Banjo Bolts
PHP Ficm Tuner
1/4 Mile 14.2 @ 93MPH

SCT Custom Tunes: MKM, Looney, SRL, SRLXX, Wildman and SPD w/ Early Lock up
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post #6 of 7 Old 03-15-2013, 04:49 PM Thread Starter
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HFCM Problem

Seemed to fix the fuel pressure issue.


Sent from AutoGuide.com Free App

Joe

2006 F350 XLT CrewCab 4X4
325/65R18
EGR Delete
Zoodad Mod
High-Idle Mod
Sinister Coolant Filter
ARP Head Studs W/ OEM Gaskets (Installed myself)
Upgraded Fuel Spring
Updated STC Fitting
Updated Oil Cooler Screen
Updated Dummy Plugs/Standpipes
6.4L Banjo Bolts
PHP Ficm Tuner
1/4 Mile 14.2 @ 93MPH

SCT Custom Tunes: MKM, Looney, SRL, SRLXX, Wildman and SPD w/ Early Lock up
Joeshu1000 is offline  
post #7 of 7 Old 03-15-2013, 05:32 PM
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Re: HFCM Problem



Sent from my LG-VS700 using AutoGuide.Com Free App

Karl and his 2003 6.0

Barefoot Accelerator Pedal
TRICO Force wiper blades
Yellow Military Aircraft Valve Stem Caps
Offensive "Stick Family" Decal
Big Ol'Honkin 1 1/4" Shank Receiver Hitch


WHAT!?! I was trying to list stuff that everyone else
hasn't already listed for their truck!




Karls03 is offline  
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