Mine is after the filter, taken from the bleeder at the top of the fuel filter housing. The lift pump on my truck is original @151k 
Fuel Pressure Gauge
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18 posts
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Re: Fuel Pressure Gauge
by CumminsPower59 » Mon Feb 20, 2012 3:58 pm
Better than mine, I am at about 5psi and dropping to 1psi Mine is after the filter, taken from the bleeder at the top of the fuel filter housing. The lift pump on my truck is original @151k
Mine is after the filter, taken from the bleeder at the top of the fuel filter housing. The lift pump on my truck is original @151k Ike
91 W350 SRW, 3.07's, NV4500, 370's, THD LPPP, Super HX40, 2nd gen IC swap, BHAF, Isspro's, 2" lift, 285's on 3rd gen 17"'s.
04 VW Jetta Wagon TDI 5speed
91 W350 SRW, 3.07's, NV4500, 370's, THD LPPP, Super HX40, 2nd gen IC swap, BHAF, Isspro's, 2" lift, 285's on 3rd gen 17"'s.
04 VW Jetta Wagon TDI 5speed
- CumminsPower59
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Re: Fuel Pressure Gauge
by PToombs » Mon Feb 20, 2012 6:37 pm
When I put my LPPP (case /cummins pump) on I was getting about 15-16 at idle and 10 at WOT. I didn't have a strainer before the pump and got some trash in it. After I cleaned the screen out I had about 12 or 13 at idle and 7 at WOT. I put in a draw straw, prefilter and 1/2" lines and it came back up to 16-17 at idle and 10-11 at WOT. I still have the factory lines from the filter to the IP.
The factory diaphragm pump is supposed to be 5-7 psi at idle, no less than 3 at WOT, says the factory service manual.
The factory diaphragm pump is supposed to be 5-7 psi at idle, no less than 3 at WOT, says the factory service manual.
pete
Just enough power to break everything behind the crankshaft.
Just enough power to break everything behind the crankshaft.
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PToombs - 14mm rotor
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