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Fixed the leak on the fuel filter housing, just needed and o ring… I guess I’m going to to ahead and start try to test the OPS to see if the new one is bad. I’m really not sure what else to do. Could it actually be an oil pressure issue even tho is shows oil pressure when I crank it ?

So now I’m really at a loss, when I bypass OPS with a jump wire the pump works. Put im a new OPS no power to the pump. But it shows oil pressure when I go to crank it over… I’m so confused. Do you think it’s an oil pressure issue? Any ideas? I’m in rock springs Wyoming.. no shop wants to take...

No I didn’t loosen anything that’s why I thought it was weird for that to leak randomly on top of everything else going on

I bypassed the OPS by using a jumper wire and got power Thank you so much!! Also when I by passed it, the fuel pump kicked on and then fuel leaked out of the bottom on the filter housing.. now do I have another issue there or do you think it leaked out just cuz I was forcing it to pump fuel?

Per your advice I used a jumper and by passed it and got power to the lift pump again!!! Do you think the OPS is bad or could that just be cause by an oil leak? Thank you guys so much for the help!

I replaced the relays, still no power to lift pump. I traced the wires they go back above the gas tank and splice into another plug. There was power there. Do you think it could be a bad OPS that would be cutting off power to the lift pump? I’m just at a loss of what to do.

Thank you.

I have a p series 1994 6.2l Chevy diesel motorhome (possibly 6.5l) I’m not at all a mechanic but am very mechanically inclined. One day it just didn’t start sounded like it was struggling for fuel, I changed the fuel filter still nothing, no fuel comes out when I try to bleed it either. So I...