i think my truck is gunna need a lift pump it started bucking once a while under load i replaced fuel filter seemed ok but 5th gear had lost power seems, and when i bump truck over i dont hear the pump, could this be the lift pump? if so imn going with a fass, the injection pump is pretty new. thanks guys

 

I would deff get a fp gauge on it

 

Yes, it could very well be the lift pump. Double check all your fuses and relays to make sure it isn't an electrical gremlin. Regardless of modifications or power, a good aftermarket lift pump is an excellent investment to keep your VP44 alive and happy. A fuel pressure gauge is also an excellent investment.

 

i got the fp gauge just gotta get the banjo bolt i checked fuses and relays all seem good, which ones should i check?

 

Check the circled fuse and relay.

 

i went out after i let it sit for about 30 mins and it kicked right on im wondering of the brushes are sticking once in a while the truck starts first time all the time and has the same power threw gear till 5th seems less idk maybe im freaking trippin ***** imma hook a fp gauge up tomorrow on the injection pump???

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well checked FP was at 14psi and didnt drop below 8 so im guessing that i had a little bad fuel or filter was cloggin up or air from some where

 

Those numbers aren't too bad. Wouldn't mind seeing 18 to 20 at idle, and more than 10 at WOT.