Does the mechanical lift pump on the 12V's have a check valve in it? I'm thinking of putting a Holley Black pump inline with it to prime my system before I start it... I know I should find the leak where its sucking air, but I'll do that when its warm. It seems like it only looses prime when its cold, but I just gotta do something, its really starting to tick me off, and smoking like a mother when I fire it up.

So, will a Holley black pump prime the system past the lift pump? Or will it just pressurize the line to the lift pump, and help the lift pump push fuel to the P-Pump? -

MotorOilMcCall's Sig:

prime to the lift pump and pressurize the line, my brother put one on his 96 he was having the same problem -

94cummins12v's Sig:

94 dodge ram 2500 Cummins 12v, regular cab long box, nv4500 ,E/F shift handle w 2low and pacbreak switch, Dual 5" bullhauler stacks, dt profab track bar, Industrial injection 370HP stage 3 injectors, #5 fuel plate, 4000 GSK, HTT holset 35/40 hybrid with a 16cm non gated housing, ported exhaust,o-ringed head, ARP 12mm studs, pacbrake exhaust brake,60 lb valve springs,custom 191 dv's, timing at 18.5*,13" ceramic valair 6sp clutch, AFE intake, Pyro,boost,Tranns temp,,

Did it solve it?

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Well... I put it in, but its shot... I should have guessed after what I put that stupid thing through. I'm gonna spend the night tearing the Haisley Kicker pump out of the 98 so I can put it in the 97... The 98 doesn't see much road time anymore anyways. That should solve my problem, as it feeds directly to the pump, and has its own fuel filter. -