Iam working on a buddies truck and ive tried to figure out what its doin but iam lost we can drive it around 60 and get in it and it falls on its face like it runs out of fuel and drop a gear and it will pull but then it smokes like crazy the truck is bone stock and not giving a code where do i need to look
LBZ: fuel prob
- Thread starter crash85
- Start date
List everything you know about the truck. How many miles are on it? Is he the original owner? If not the prior owner could have tuned it. Have you or someone else checked balance rates on injectors? Unfortunately there are lots of problems that could cause the issue you describe. Sounds like a fuel issue of some kind to me, bad injector, weak Cp3, plugged fuel filter, weak FPRV,etc.
ok 140xxx miles the balance rates are good i belive he's the second owner and he said it will do it ost running around 70 and get in to it and make it pull it will just fall on it face and if he will floor it it will pull out and run but smoke like hell. or he can drop a gear and pull out and smoke ive put a new fuel filter on it. Hopeing that was it but it still does it
Could it be the vane position sensor? That's kind of what mine did when my sensor went out. The turbo wouldn't spool and it would smoke like crazy.
Best I remember there is a generic pid list for the Dmax you can log on EFI that will tell you pretty much everthing? If it was a boost leak you would probably see smoke every time you went to accelerate.