6.7L Cummins Valve Lash Adjustment | 4th Gen 2014-2018 Ram 2500

[@mikeb6300]

Hello, Good video, may I make a suggestion, I’ve been a truck mechanic for 30+ years and also had worked for cummins earlier in my career, and over the years I’ve been trained to use a torque wrench on the valves as well as the injectors, now on the smaller engines such as 6.7 you have to judge the torque on the valves May want to try 2-3 inch pound Doing this way you know that all the valve lash are the same.👍🏻

[@donscott6720]

When torquing to jam nut how do you prevent the adjustment screw from tightening

[@MKSPerformanceOffroad]

I tightened with a wrench while holding the adjuster and then went through with a torque wrench and rechecked the adjustment with feeler gauge before moving on to the next set.

[@joeywalker7568]

Thanks for the info it was everything I needed.

[@jonathanwharton5837]

Great video man, my dad is moving out of the country and I bought his 2017 ram 3500. So I'll have to do this asap.

[@MKSPerformanceOffroad]

Much appreciated, thanks for supporting the channel.

[@Legoinry]

Wondering if you had to change out your vavle cover gasket as well and if not how many miles did you have on the motor when you did this

[@MKSPerformanceOffroad]

No I did not, roughly 30k if I remember correctly.

[@vintagetrk]

Love the video thank you. That Copper Tubing makes it look like ya got a Still under the hood LOL.

[@MKSPerformanceOffroad]

Thanks for your support.

[@wanderingquestions7501]

It looks like 2 values per cylinder?

[@MKSPerformanceOffroad]

Correct, one for exhaust and one for intake

[@jacobm9574]

Do you think I could do this on my own with absolutely zero motor experience besides changing the crank case filter? I’m at 141k and I think I am hearing a slight tick noise from the valves. I was planning on paying someone to do the adjustment at 150k like the manufacture recommends but I feel like it should be done sooner. Also, if I don’t do it sooner do you think I’ll be okay? I can only really hear the tick over 65mph or when I’m accelerating. The truck is deleted and I’m planning on towing a toy hauler with it next month so I’m slightly worried lol. Thanks.

[@MKSPerformanceOffroad]

I would say this is pretty easy to do if you follow instructions well and pay attention to what it tells you. Grab yourself a barring tool to turn the motor through the access port and mark damper on crank with a paint marker for easier visibility. Do you have a friend who has a little experience that could assist?

[@jacobm9574]

⁠​⁠@@MKSPerformanceOffroadyes I have a reliable guy that does some work when needed, but I’m balling on a budget driving this truck around right now haha. Do you think I’ll be fine driving it for another 3-4k miles on a long road trip before I do the adjustment?

[@MKSPerformanceOffroad]

@@jacobm9574 I think you would be fine, if your that worried about it pull the valve cover and check lash with a feeler gauge and ensure its not out of tolerance or too far out.

[@jacobm9574]

@@MKSPerformanceOffroad okay sweet thank you

[@96318dakotaify]

My 2020 Cummins is hydraulic lifters cant adjust em

[@MKSPerformanceOffroad]

Thanks for pointing that out, just realized I had it listed to 2020. New 6.7 design is definitely auto adjusting

[@santosrivera3473]

Thanks

[@jimjanik720]

What is the copper tube for ?

[@MKSPerformanceOffroad]

Exhaust back pressure sensor to dissipate heat before the sensor. I have this reading on a separate gauge because the programmer doesn’t read the factory sensor.

[@jagg5474]

Did you end up getting any extra performance

[@MKSPerformanceOffroad]

If I gained any performance, at this stage isn’t really noticeable. I will say, valve train was a little quieter (not super noticeable) and hauling a 10k+ fifth wheel average 1-2 mpg more than the last pull we did prior to adjustment. So far mileage is up from 10mpg to 11.8 - 12mpg.

[@MotorHead18]

👍

[@donkintz281]

What is the copper tube coil for?

[@MKSPerformanceOffroad]

Cools exhaust before getting to the back pressure sensor that is installed at the end of the tube

[@garyrichards6041]

Do you have a video on how you did the copper tube and back pressure?