Engine/Transmission (1998.5 - 2002) Just installed lift pump

[lrox]

I just got done replacing my lift pump. I have 15psi at idle and wot between 9-10psi. My question is: when I bump the starter I no longer have any reading on the fuel pressure guage- before I always had around 9psi until the pump stopped running. I have larger banjo bolts and an electric autometer ultralite 15psi fuel gauge with a 128 micron snubber. I also packed the electrical connectors with electrical grease. Is it possible it might be air in the system. I have run the truck for about a 1/2 hour driving it hard and still have the same problem. It just seems a little strange. The truck only has about 36k but being a tech, i don't want to deal with warranties. Any help would be appreciated.

I'm just glad to have fuel pressure now!!!!!!!!!!!!!!!! Oo.

 

[AKAMAC]

Where are you tapped? If you still have the schraeder valve you might try a manual gauge. Sounds like air in feed line to gauge. Try removing the snubber for awhile. Mike

 

[Sticks]

Even with air in the line/gauge, you should still be seeing pressure. Ditto the getting a manual gauge and testing it that way.



Is you FP gauge mechanical or electrical? Either way, check all of your connections to your gauge.