I've got a 6nz problem.

Fuel pressure was checked last July, and was around 110 at full throttle, I've got 5232 injector codes so it idles a little rough. Will do the full throttle check with no load and see. And yes stock cam was put in.

I haven't checked the diffs, but will do that on Monday, if it's a failed bearing wouldn't my rear temps be up?

Just replaced all 4 airbags under the cab, and sleeper. Couldn't get to the shocks though, I have a chest type headache rack that is in the way. All the wheels are good along with the rubber. The front hubs are tight.

Thanks for the replys.

 

It has been using water. This is kinda what my mechanic was thinking either head gasket or injector cups. I just had an oil sample run, and all was good. Also we did the water bottle test on the overfill tube, and no bubbles.

 

How do you go about inspecting it? Mine looks good, no pieces missing.

I checked all the sleeper and cab bags, torsion bar and front mounts. Nothing wrong there. Motor mounts look good. Rear end plugs are free of any metal pieces.

So I guess if it holds together from Milwaukee to Houston and back to Milwaukee, I'll be pulling the head off to see whats wrong. Hopefully its just the head gasket.

Thanks for the suggestions guys.

 

Okay here's the update. My mechanic opened it up yesterday and found 1 of my injectors has a broken spring. He said that all the cylinders were wet with diesel, more than usual. He pressurized the cooling system up to 15 pounds. We let it sit like that for a couple hours and there was no coolant leaking into the cylinders. He checked it with a borescope. We did find a small coolant leak by the thermostat housing, but not enough to explain all the water Ive been going through.

Would a broken injector spring cause fuel to leak into the top of the cylinders and cause all the smoke at start up?

If there is not any water leaking into the cylinders would that mean the head gasket is good?