lpop??????? help

[FENKER]

is my lpop bad? my in dash gauge last night was reading low and the more gas i gave it the lower it went. pulled over checked my oil and it was fine. fired right back up and i babied it home. it stayed lower but noticed no differance in performance or any lag or noise. u think it could be my lpop or faulty gauge?

[Maverick1701]

could be a bad sending unit as well.

[FENKER]

here is a vid
65d36bc2.mp4 video by yamaha_dan - Photobucket

[ToMang07]

Are you having a hard time starting? When you go to start it, how quickly does the oil pressure go up on the truck? (Cold Start.)

[FENKER]

started fine this morning, coldish...about 50*. it goes up right after i start it.

[alberta 7.3]

I'd remove the sender from the top of the HPOP resi and install a mechanical gauge before doing anything else. IIRC the sender is 1/8" NPT so even a cheap 0-150 psi air compressor gauge will work for testing purposes.