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Old 03-21-2013, 04:51 PM
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Fuel Pressure ?

I turned up my fuel pressure to 60psi on my regulated return. Now the truck is really hard to start. At 40 psi it cranks fast and strarts in a few cranks. Is this a normal problem?
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Old 03-21-2013, 05:57 PM
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factory minumum is 45psi. So if ur run'n 40psi, then a few WOT runs, who knows what it read then...
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Old 03-22-2013, 12:54 PM
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I have a fpg in the cab. At 45psi on the lower tunes i dont have a problem. I had the fuel pressure at 65 and the dam thing draws way down on the batteries when it cranks and wont start. It did the same thing with the fass on it.
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Old 03-23-2013, 07:00 AM
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where you test'n fpr at...d/s or p/s of fuel bowl?
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Old 03-23-2013, 06:10 PM
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The in cab fpg is wired in at the fuel pressure reg on the regulated return.
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Old 03-23-2013, 07:23 PM
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i have mine set at 65 all the time....does that mean i have it set to high?
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Old 03-23-2013, 07:39 PM
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I highly doubt high fuel pressure is the issue.

And 65 is not high.
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Old 03-24-2013, 08:36 AM
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That's what got us confused. This happened with the fass to. The higher we went with the pressure the harder it gets to crank and at 65psi it kills the batteries before it'll start. At 45 it'll crank all day and fire right up.
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Old 03-24-2013, 09:46 AM
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I'd check your batteries, or ICP.
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