I reviewed a 2023 RAM 2500 Cummins 6.7 Diesel Engine as a heavy duty mechanic. I talk about potential engine issues and problems that these Cummins diesel engines face today. The number 1 issues stem from aftertreatment issues like DPF problems and Diesel exhaust fluid issues. We also talk about Cummins turbo issues, finally I talk about ways to prevent all these issues and how to extend the life of your Cummins diesel engine.

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I hope everyone is having a good weekend! Today I have my hands on the notorious 6.7 cummins diesel engine. I past I've talked alot about the good things with this engine but I figured today I would chat about 3 of the most common issues with these engines that I see as a heavy duty mechanic.

1. Aftertreatment engine codes/issues

By for the #1 issus I see with these cummins engine are aftertreatment issues. these issues normally come in the form of check engine lights. and usually there are sensors that have gone bad but sometimes we run into wiring issues, software problems and even full component failures like DPF failure or def pump failures.

2. EGR Issues

the second most common issue is EGR problems. these cummins engines seem to love running sooty and this causes a number of issues with the EGR system. first off clogged EGR coolers are pretty common and secondly clogged EGR valves and intakes. often times we have to clean out all the soot in order to clear the engine codes

3. VGT turbo actuator failure

the cummins run an electric VGT turbo which usually works well but sometime the actuator can fail or the VGT veins internally on the turbo can seize. I have personally replaced a number of these turbos and it seems to be a pretty common thing on the 6.7L cummins engines.

Overall I think the cummins is a great engine but these are the most commons issues that I see in the real world as a heavy duty mechanic.

hope you liked the video!