Have a 2021 ram 6.7L and I am having an issue where under mid to heavy thottle (boost in the 15psi) range it will cut out and buck and stumble so bad that i need to let off and milk it, it will continue to idle sporadically for a bit. It doesnt do this if you are babying it under very light throttle. It was throwing a check engine light for NOX sensor which dealer replaced, now no check engine lights but still experiencing the same issue. Could it be the fuel filter? Seems strange there are no codes being thrown...Any suggestions?
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2021 6.7 stuttering and misfiring under heavy throttle
- Thread starter Stoopstn
- Start date
H3LZSN1P3R
You're doing it wrong
Fuel filter would be the first thing to check for sure next would be lift pump pressure
Yeah, i'll ask them about that. The dealer is saying injectors may be bad. Only 60k miles.... I would also think injectors would be throwing codes but we shall see.
H3LZSN1P3R
You're doing it wrong
No i doubt the injectors would be at fault maybe the injector harness but that would be a stretch since its only hard throttle
Yea, lots of fake/inferior filters making their way into supply chain.
If you got something cheap off AMZ/eBAY, it's likely fake. Hell, I think some have even reported dealers sourcing filters from questionable sources.
Not saying that's it, but easy to fix.