HELP!!! I'm stock in Ft. Stockton, TX

That would be caused by the truck not running properly. If the EGR system is pumping THAT much soot into the system, something is horribly, horribly wrong. The combustion isn't happening efficiently, which can be caused by anything from a boost leak, a bad calibration on the ECM, to a crapped up pressure sensor. It is not normal, at all. I do my oil changes with filters at 30k as well, and I've never had those pressure losses.

 

ISX engines of that vintage also like to dump their EGR coolers and the DPF element along with it.

 

If you do have a blown head gasket, and those cylinders are getting polluted with coolant, they won't respond properly on a cylinder cut out test. With white smoke, I'd think you might want to run a pressure test on the coolant system, first, to verify where it's going and if it's going into the engine and causing that white smoke. That can verify head gasket or EGR cooler, or what have you. Did he pressure test those injectors by taking off the actuators and seeing if they are leaking or losing pressure?

 

Forgot to mention, you can simply open up the crank case filter and look at it. If it has slimy gooey crap aside from just oil in it, you've got coolant intrusion into the engine.

 

there is a good shop in ft Stockton, tx. they don't do ecm reprograms but can replace a cyl head within few hours. the name is hernandez

 

Hope that cures it for. you fingers crossed

 

Stupid question but on a car a blown head gasket your oil would be milky colored. Would it not be the same with a truck? Why not?

 

Not really stupid but is a 352 a Ford and not a Chevy? Oh Chewy, stupid me.
Gas engines normally have composite gaskets with fire rings around the cylinders. When a fire ring fails it continues on in the path of least resistance. Coolant and oil passages extrernal and internal leaks.
Diesel engines frequently have a steel shim, or plate , with the fire ring built into it. Then there is an individual gasket for each water and oil passage. It is possible to have a compression, coolant , or oil leak without one of the others, or they can come in combinations. The steel plate has the correct thickness between the block and head but every hole has it's own seal. Coolant can also leak between the liner and block showing up externally.
Many different models and many different possibilities.

 

Good luck. If they can't fix it here surely someone in Odessa can. I am in fort Stockton for a few more days working. Never been here before this trip so I can't offer any local advice but if I can help in any way let me know.