95 6.5
runs good to it gets warm it dies out just setting there its driving me nuts done put a new fuel pump relay on it new ops i can hear the lift pump but sometimes i cant and and if i hold lift pump in my hand it gets hot so i think its the lift pump how do i do a test?? to make shore the its the lift pump i tryed the one i found online open the
t-valve y the truck is runing and when i did that my truck died i just wanna make shore thats my problem b4 i go buying more stuff i dont need thanks |
If the truck dies when the Tee valve is opened- the LP is not providing enough fuel.
That could be because of several reasons: A bad lift pump-AC Delco from a 93 is the best stock replacement LP-FASS or Air Dog are good expensive aftermarket options. A bad LP ground can also cause excess current draw from the LP. A plugged vent in the filler cap causing more vacuum in the tank than the LP can overcome. A plugged sending unit sock preventing enough fuel flow. A bad OPS not powering the LP-AC Delco ONLY for OPS replacement and google "OPS relay mod" and build it or buy a kit from Kennedy Diesel. Another problem could be a plugged fuel filter or last ditch screen that is located in the fuel manager on the fuel heater mast. |
i just put a ac delco ops on it and did the mod i think its the lift pump ill let you know if the lift pump helps thanks for ur help
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