wont ldle and low power and black smoke

[obxairman]

my son ran it out of fuel . We loosed the lines on the pump and got it running . The truck has low power and wont idle ... Any ideas

 

[dilligaf13]

Most likely your fuel filter is clogged from sucking junk off the bottom of tank. Less likely is that you've still got air in the fuel line. Is it an A1 or A2?

 

[rideoffroad]

What kind a truck? Sounds like it still has some air in fuel lines

 

[obxairman]

i think its a a2 . i will go out and look i also think its a 1990 and was rebuilt.

 

[obxairman]

SO are we taking about the little lines that come off the pump?

 

[dilligaf13]

If there's a turbo on the passenger's side of the engine it's an A2

 

[obxairman]

sure is hahah big one

 

[obxairman]

how many fuel filter are on this thing . ! see one near the primer

 

[Coffey1]

There's a big one under fender behind tire

 

[wheelspinner]

Did you bleed the pump properly? There is zero reason to loosen fuel lines to bleed, there is a bleed valve (screw). Chances are your a) Like said above sucked up crap from the bottom of the tank, or b) most likely still have air in the system from improper bleeding.

 

[obxairman]

Im sure i have not . I am new to diesel and have no guidance. Would you be so kind as to tell where to find said screw and a brief procedure. The fire department want to use it this thursday in a parade and i dont want to cancel on them . The filters look clean.

 

[Rmtaunton]

Looking at the pump it will be towards the fan just on the back side of pump , it is a 10mm

 

[obxairman]

ok so open the bleed screw and let it bleed for how long ? i did find it and opened for a minute and it did not improve

 

[obxairman]

should i open it as in all the way and let it pump for a bit or should this happen quickly

 

[Rmtaunton]

Just about 1 or two turns , don't let it fall out and you will have to pump probably 50 to 90 times to see fuel

 

[obxairman]

do this while its running ?

 

[Rmtaunton]

No use the hand pump until you see clean fuel with no air coming out of the bleeder

 

[obxairman]

ok ill go try it

 

[dilligaf13]

Loosen the bleeder screw and hand pump the primer pump (AKA "lift pump/transfer pump"). First few pumps might just be all air or a frothy air diesel mix. Keep pumping till it's just pure diesel fuel and then quickly tighten the 10mm bolt. It may take a few pumps or maybe closer to 100 pumps, depends on how much air is in the lines. Once it's straight diesel coming out and you tighten the bleeder screw back it should fire up and be fine if it was just air in the lines. If that doesn't fix it then it's more than likely one of the fuel filters. There's a large canister (on most A2s) behind the drivers side front tire that contains a fuel filter. The other filter is on the drivers side of the engine by the lifter pump you just primed the fuel system with. Good luck

 

[obxairman]

ok tried that and didnt get much air out of it . called a diesel guy gonna be here in am. Im sure its filter or something easy. i am looking forward to getting some expert advise as well as a good walk around on the truck. I just dont know anything about diesels at all .But thanks everyone for trying to help it means alot