Join Date: Apr 2006
Location: Ventura, Ca
Thanked 109 Times in 97 Posts
iTrader Score: 0 reviews
Generally the lift pumps are strong and reliable, however they can have problems. The first and foremost thing you should do is install a fuel pressure gauge. That will tell you everything. Sometimes the "O" ring on the plunger can go bad. 10 cents at the hardware store will fix it. If you do have to remove the LP, replace the bolts with studs. You will never get it back on, especially if you are still using the fuel heater. If you remove the lift pump, make sure the internal rod does not drop into the engine. Major hassle if it does. The fuel heater can pull air, usually through the electric plug on the bottom. Smear a bunch of dielectric grease all over it. If the problem stops, you know the cause. The grease is a temporary fix. Concerning your mechanic, find another one.
96 reg cab, 5sp long bed 4x4: 4GSK, pump and AFC altered, AFE filter, gasket matched and ported exhaust manifold, Fluidamper, 4" exhaust, gauges, 5th gear upgrade, KDP KO'ed, Hamilton cam, Southbend Con OFE, Bosch injectors, Dynatrac axles and hubs (don't go there, they don't stand by their product), airplane landing lights, Dana Powerlok's front & rear, front truss, F&R skid plates, runs on WVO.