[Jessnco]

Long story short all upgrades available on this truck. Was pulling trailer and truck bucked/surged. Pulled over changed both fuel filters. No change also was smoking extremely bad. Drive it for 20 miles did some reading and determined it was head gaskets as everything else was either deleted or changed. Well it runs the same now as it did before. Took to shop was told I needed a vgt so got a new one . I have changed the ipr ipv vgt and cleaned inside of turbo. Still runs the same. The shop drive it and manually opened vgt and it still ran badly until it reached a certain speed then spun the tires.

It produces boost, has good fuel pressure, no problems with oil pressure and injectors have passed 7 buzz tests already . No codes

 

[Jessnco]

I have a video of all sensor readings but don't know how to post it

 

[TKOPerformance]

The buzz test doesn't really mean anything. Injector health is determined by running a contribution test. Smoking would seem to indicate a fueling problem.

 

[Jessnco]

The injectors were put in a year ago new. The ficm checks out fine as well. It was checked manually with volt meter as well as the reading from scan tool. Constant 48 volts. I guess it could be wiring either that or more than one would have to have failed I would think. I think I will try sensor first since it does read high. Cheaper to start with .
Thanks for reply

 

[TKOPerformance]

The injectors being a year old doesn't preclude possible problems. Who's injectors are they? Have you checked fuel pressure?

You can't check the FICM other than testing voltage. The voltage test just means that the amplifier section is good. FICMs fail all the time from other issues (logic board failures, etc.), especially as they are getting older. The only definitive FICM test is to swap it with a known good FICM and see if there's a change, or send it out to be diagnosed by someone like Ed at FICMRepair.com - FORD Powerstroke 6.0 FICM Repair, PHP Tuning and Truck Parts. Even most Ford dealerships can't test the FICM.

When its smoking what color is the smoke?