2022 6.4 3500 long crank and drinking fuel

[AWA16520]

Hey y'all, looking for some help. I've taken my box truck (22 6.4 hemi 3500) to the dealer and we're getting nowhere. It started with a long crank and a MIL p0171 and p0174. They replaced the O2 sensors which didn't fix the issue. Then they replaced the low side fuel pump, which took 6 months to get. After dropping the tank they ripped the wiring harness. After an overnight cold soak it still has a long crank. We're still getting 4-6 miles to the gallon.


There's 27,000 miles on it. Does anyone have the same issue or input? PLEASE PLEASE PLEASE!!!!

 

[tron67j]

Maybe a bad mass airflow sensor?

 

[AWA16520]

Its been replaced as well with an oe sensor

 

[Mike Wenrich]

Maybe crank position sensor? Would seem they would have gone there first but maybe the codes sent them in a different direction. That sensor could really throw things off but usually just gives you a no start condition when it fails.

 

[AWA16520]

Maybe crank position sensor? Would seem they would have gone there first but maybe the codes sent them in a different direction. That sensor could really throw things off but usually just gives you a no start condition when it fails.

Ive scoped the crank and its in sync.