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Old 03-05-2008, 03:56 PM
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why just 15 psi?

Just installed the 2nd fuel pressure gauge. Thought the first one was broken. Wondering why I only get 15 psi at the shreader valve. Truck runs ok.
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Old 03-05-2008, 04:01 PM
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15 psi is VERY low. Actually harmful to your injectors.

Are you sure you have the correct type of gauge?
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Old 03-05-2008, 04:02 PM
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Truck is running with 15psi or is that cranking pressure?
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Old 03-05-2008, 04:02 PM
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HaHaHa marty we have a habbit of posting at the same time alot
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Old 03-05-2008, 04:03 PM
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I agree 15 psi is way too low very harmful for injectors. I still think you have a bad FPR especialy scine the housing cracked and you jb welded it
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Old 03-05-2008, 04:12 PM
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That could be it. I took the little screen out too to clean it up and there is a little plastic ball a little bigger than a bb as I remember in there too and seems like there was a little spring too. If there is mine is missing So I have ball, screen. Should it be ball,spring,screen?

Last edited by Triflex; 03-05-2008 at 04:22 PM.
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Old 03-05-2008, 04:14 PM
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Yes!
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Old 03-05-2008, 04:18 PM
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Quote:
Originally Posted by vitalidle View Post
Truck is running with 15psi or is that cranking pressure?
Thats at idle after a bb mod.
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Old 03-05-2008, 04:19 PM
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Quote:
Originally Posted by Maintain View Post
15 psi is VERY low. Actually harmful to your injectors.

Are you sure you have the correct type of gauge?
I ordered one gauge and sent it back, Ordered another from JEG`s by number and it was pictured as a fpg but it only says psi on the gauge, Goes to 100
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Old 03-05-2008, 04:22 PM
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Yeah you want better then 50 psi at idle
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