Barry Smith

Hey guys, I just installed my FP gauge last night (Auto-meter Ultra Lite 0-30 psi electric) At idle it's 14-15psi normal driving 13-14, WOT 6-7 psi for 6 or 7 miles like clock work then push in the clutch to turn in drops to 5 psi I take off easing it along drops to 3 psi. I shut it off started it back up and back to 14-15 psi. I was wondering if I could have hooked the gauge up wrong or what the deal was?

Shovelhead

Are the wires all tied up out of the way of moving parts?
Also double check your ground connection.

Barry Smith

I was kinda wondering about the ground. I'll check and make sure everything is tied up.

Tazman

If you're all wired up right (personally I prefer mechanical) LP is headin' south.

m2cw

Geico266

My bet is the pump is going south. I installled my FP gauge yesterday only to find the pump was fluctuating just like you described. Replace the pump to be sure, if it doesn't work you'll have a spare for when it does quit. lol

Barry Smith

Thank you! That's very reassuring!

Barry Smith

Now when first starting the pressure is 15 then drops to 5 and from there it drops to 0 pretty quik. I guess I'll be replacing a lift pump tommorrow

Barry Smith

Well I replaced the lift pump Friday. Boy was that fun. I wish they could put that somewhere that would be hard to get to Now my readings are 15 at idle 13-15 running down the road and 8-9 at WOT. As usual Friday as I was driving around trying to find a pump it read right on the money?

Geico266

Did you remove the fuel filter canister? Not too bad of a job the second time! LOL

Barry Smith

Geico, dummy me didn't even think about taking off the fuel canister