lost power
 

no pulling power up hills with 3H trailer loaded
no take off power sputters until you let off pedal
no passing power
lose speed going up hill
notice rpm is close to 500 i had it up 900
runs normal with no load

Sounds like it is not getting enough fuel. Have you checked your fuel and air filters? What vehicle do you have?

96 dodge 2500 2wh dr
i just checked the air filter
not anything else so far

Also check the supply pump.

ok, my water separator filter was dirty replaced, the pre-heat filter was also dirty, cleaned,
so now its running good. thanks for your help, i need to keep up with my filters.

Glad it is going good now.

ok im back, i started the truck Sat am running nice then it went off. no power what so ever. long story short, i worked on it all day n half day on Sunday and gave up so now its in the shop. idles good, no power up hills, really bad now, give it some fuel white smoke from pipe. so i will give an update when i hear from the shop..................

FYI...Transfer Pump was out replaced, back on the road !!

Good is was something simple.

i kinda guess that was the problem but that was guessing. thanks for your help.