BAD HFCM??? Low Fuel Pressure - Ford Powerstroke Diesel Forum
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Old 02-12-2014, 03:02 PM
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BAD HFCM??? Low Fuel Pressure

Had problems with truck gelling up and low fuel pressure at WOT but fine at idle. Getting back to warm weather and no more gelling still have low fuel pressure with BRAND NEW MOTORCRAFT filters. Pressure checked with mechanical gauge and my edge both reading the same.
I've noticed my hfcm is making abnormal noises now. Could it be going bad??

I also did the blue spring upgrade last winter but never had a gauge on it till now. So im starting to think i could of made a mistake while installing it but this seems less likely because i've noticed a steady drop in performance here just lately.
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Old 02-12-2014, 05:48 PM
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What is your PSI at idle and under load.
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Old 02-12-2014, 07:20 PM
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normal 60 psi idle, next to nothing Single digits at WOT but fine under normal crusing condtions
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Old 02-13-2014, 09:44 AM
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The pump could be weak, but it seems like more of a restriction issue. You may want to disconnect the line coming from the tank and see if you can put some air to it to ensure your foot in the tank isn't plugged up.

Pumps aren't that cheap, but I would order one and put it in. Order just the pump off of Ebay and save some pennies vs. the whole HFCM.
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Old 02-13-2014, 03:34 PM
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i plan on blowing all the lines out tomorrow. Hope thats the issue or I see myself spending the money to upgrade the factory fuel system
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Old 02-18-2014, 01:02 PM
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Blew all the lines out no change in pressure pump seems to be getting louder and seems to be alot of bubbles in my up fuel filet housing. I bought a new old style pump off ebay for 180$. Hope it fixes the issue
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