Low fuel pressure.... Sometimes? - Ford Powerstroke Diesel Forum
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Old 02-21-2012, 02:32 PM
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Low fuel pressure.... Sometimes?

Just as title says. I have the blue spring mod and usually I have around 67psi and at WOT it will drop to around 60ish psi. But sometimes if I get on it when cruising down the highway it will drop to the teens. Zero once!! This has happened about four times now. If I let off and ease into it I get pressure back. Its been in the 30s so it's not gelling.

Does this sound like the pumps on its way out or more like a sticky regulator?

Thanks.
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Old 02-21-2012, 03:09 PM
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What gauge are you running is it going through the CTS or a different gauge.
2 stroker
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Old 02-21-2012, 03:15 PM
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^^^^Yes what gauge are you using?
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Old 02-21-2012, 05:17 PM
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Through my CTS. Are the known to read funny?
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Old 02-21-2012, 05:48 PM
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I have a feeling mine is on its way out just sometimes it feels really sluggish and won't smoke or anything then sometimes it's balls to the wall poor out the smoke and away i go and it started this not much longer after my blue spring mod


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Old 02-21-2012, 05:50 PM
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And I got a fuel pressure test kit and but with having to take a bunch of stuff apart I only tested with key on motor off and only seen 50 psi


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Old 02-21-2012, 06:13 PM
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Could be a failing sensor. When it drops to zero does the truck shut down? That's what I'm wonderring.
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Old 02-22-2012, 12:04 PM
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Definently loses pressure. When it drops it dont die just bogs down. Today it was good all day then out of nowhere it dropped and it wouldn't go above 60 at idle and around 50-55 driving.
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Old 02-22-2012, 01:49 PM
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Are you useing Ford or Racor fuel filters
2 stroker
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Old 02-22-2012, 02:13 PM
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Always ford filters! Changed around 4k miles ago. It just comes and goes... Kind of odd. I've seen a pump just totally quit. Not come and go like this. That's what makes me wonder if it's possible for the regulator to stick open once in a while.
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