question about fuel pressure.

[99cummingetsome]

i have the hpfp 95 system i believe and was wondering about my fuel pressure before i turn my truck on. when i turn the key to the start position without bumping or cranking it, my psi reads 1 and then drops to 0. once i start my truck up it jumps to say 16-18 at idle and stays. if i bump the starter it will jump to 16-18 then slowly drop back down until i start the truck. i am very pleased with the pump and fuel pressure but is starting the truck with 0-1 psi slowly killing my vp. id hate to have to bump the dang thing before every start up, would also like to know if you all received my warranty info that i send off back in december i think it was, havent heard any confirmation or anything.thanks for any help diesel dan and i love your product btw

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99 3/4 Ton SB QC 4x4- Quadzilla Adrenaline w/ Pulse, 130hp sticks, Fass Pump, Valair Feramic Single Disk, 4 inch exhaust to 6 inch tip. Dying for a dual disk and more air!!

[Diesel-Dan]

Originally Posted by 99cummingetsome

i have the hpfp 95 system i believe and was wondering about my fuel pressure before i turn my truck on. when i turn the key to the start position without bumping or cranking it, my psi reads 1 and then drops to 0. once i start my truck up it jumps to say 16-18 at idle and stays. if i bump the starter it will jump to 16-18 then slowly drop back down until i start the truck. i am very pleased with the pump and fuel pressure but is starting the truck with 0-1 psi slowly killing my vp. id hate to have to bump the dang thing before every start up, would also like to know if you all received my warranty info that i send off back in december i think it was, havent heard any confirmation or anything.thanks for any help diesel dan and i love your product btw

We dont confirm wnty...but if you give me your SN i can look it up.

The VP likes to start with low pressure. That is how the ECM is programed to run the stock pump (And in this case our pump as its a slave to the ECM)

This is normal pump operation and will not hurt a thing. What you dont hear is our pump being pulsed when you are cranking the engine.....the ECM does this to lower pressure to the VP when cranking.

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Dan MacDonald
Diesel Performance Products
Head of Wnty/Trouble Shooting

Please don't PM me. I have a Vendor section just for CF users to post questions. I would like to keep everything public as it might help others with similar issues. Thanks for your understanding.