Jeffh555
Red Skull Member
My 2000 E350 7.3L van started randomly blowing white smoke out the exhaust. Are there any 7.3L nerds here?
Basic on the van:
330k miles
Full Force Diesel stage 1.5 injectors
Riff Raff Fuel Rail Crossover
Riff Raff High Pressure Oil Crossover
Bellowed Up Pipes
Diamond Eye 4" Turbo Back Exhaust
DP Tuner with tunes from Full Force Diesel
Dieselsite 4R100
4x4 with 4.56 gears and 37s
Typically 16,000lb gross combined weight (pull JK on open trailer).
I’ve had the van for ~9 years. All the mod’s happened about 6 years ago.
It’s due for an oil change, it’s been a 11 months and 4000 miles. I run Rotella Dino oil.
The last trip out was a particularly easy tow, 1 hour each way and no real grades. Parked it for a couple months and then. Went to move a bobcat across town and I started seeing white smoke out the exhaust.
It’s pretty minimal at idle, but it’s fogging out my whole lane and half the lane next to me under any load.
Can’t see/smell anything weird in the oil, coolant, or exhaust.
Some searching pointed to the MAT. I spent 30 min trying to find it, then searched again and it seems that the van doesn’t have one.
I have FORscan, but I just got the USB to OBD cave and haven’t really had time to play with it. I did do some diagnostics:
The cylinder contribution test gave me a P0263 for cylinder 1.
Buzz test had no errors
KOER on demand self test gave me a P0476.
With it running, I unplugged the entire passenger valve cover harness. It stopped smoking. Because if this, I think it’s injector related. If it were turbo or sensor related, it would happen to all cylinders.
Next step is to pull the valve cover and see if unplugging cylinder 1 alone stops the smoke.
Any ideas or feedback would be greatly appreciated.
Thanks,
Jeff
Basic on the van:
330k miles
Full Force Diesel stage 1.5 injectors
Riff Raff Fuel Rail Crossover
Riff Raff High Pressure Oil Crossover
Bellowed Up Pipes
Diamond Eye 4" Turbo Back Exhaust
DP Tuner with tunes from Full Force Diesel
Dieselsite 4R100
4x4 with 4.56 gears and 37s
Typically 16,000lb gross combined weight (pull JK on open trailer).
I’ve had the van for ~9 years. All the mod’s happened about 6 years ago.
It’s due for an oil change, it’s been a 11 months and 4000 miles. I run Rotella Dino oil.
The last trip out was a particularly easy tow, 1 hour each way and no real grades. Parked it for a couple months and then. Went to move a bobcat across town and I started seeing white smoke out the exhaust.
It’s pretty minimal at idle, but it’s fogging out my whole lane and half the lane next to me under any load.
Can’t see/smell anything weird in the oil, coolant, or exhaust.
Some searching pointed to the MAT. I spent 30 min trying to find it, then searched again and it seems that the van doesn’t have one.
I have FORscan, but I just got the USB to OBD cave and haven’t really had time to play with it. I did do some diagnostics:
The cylinder contribution test gave me a P0263 for cylinder 1.
Buzz test had no errors
KOER on demand self test gave me a P0476.
With it running, I unplugged the entire passenger valve cover harness. It stopped smoking. Because if this, I think it’s injector related. If it were turbo or sensor related, it would happen to all cylinders.
Next step is to pull the valve cover and see if unplugging cylinder 1 alone stops the smoke.
Any ideas or feedback would be greatly appreciated.
Thanks,
Jeff