How To: Setting the valves on a 6.7 Cummins

Feeler Gauges: amzn.to/3jmk6ln
This video goes over the procedure to set the valve lash on a 6.7 cummins engine. The procedure is exactly the same for a 5.9 cummins except on a 5.9 the exhaust spec is .020 instead of .026
Couple things I forgot to mention clearly in the video:
1. The feeler gauge should have some resistance between the rocker arm and valve bridge, you don’t want it too loose. The biggest thing is keep that feeling consistent throughout all the valves.
2. If you end up on TDC 6 but want to start on TDC 1 like I did in the video, all you have to do is rotate the engine clockwise another full turn and you will be on TDC 1.
If you have any questions ask in the comments or shoot me a message on instagram!
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Thanks for watching!

[@masseymm]

Great explanation, thanks

[@darkirondiesel]

Thank you!

[@mudhawg8849]

Man i wish you made more diy videos. Out of all the ones ive watched on 6.7 cummins diy..yours are the easiest to understand with great explanation of how too down to the questions people would have about small ocd things. 🤘

[@darkirondiesel]

I appreciate it!

[@jimnunes6286]

Good job explaining very clear to understand!!!

[@kilo352]

Thanks for this! Very well done. Yeah, cylinders 5 and 6 are always fun...

[@albertoperez9425]

Thank you very much for taking the time to do this video, it's very helpful. May God bless you and your family

[@michaelmcmahon6330]

Excellent. Thanks for making this available.

[@michaelpeters5914]

Good and straight forward info!

[@cjbuchanan9894]

Good mind refresher, thanks bro! Channel is always on point with the correct information 👍

[@darkirondiesel]

Thanks buddy 👊🏻

[@jonathanwharton5837]

Thanks for the video bro. I just got my first ram diesel.

[@fullcirclexpw]

man your video was very informative and has me ready to dive into this adjustment! 💪🤙

[@godwinbunhu1809]

Thanks for the insightful video

[@freshlymade3932]

Thank you for that video. I now understand why that pushrod bent

[@sbjennings99]

Awesome informative Video experience Y'alls God Bless Ya, I've got a 6.7 Cummins I my Ram how often does a overhead need to be done on my truck it has 113,000 miles on it

[@vajirakantha]

Thank You great explanation

[@jorgearturofonsecahidalgo5875]

i love it good job boddy.

[@bobwhite1734]

Where did you get your feeler gauges? great video!!!

[@sk8sloppy98]

awesome video. thanks

[@zorans5200]

Great video man! I just did a head gasket on a 6.7L aswell just did everything you did.

[@darkirondiesel]

Right on buddy!

[@zorans5200]

@@darkirondiesel once I adjusted the valve settings, I got kinda worried it was not the right setting because the valve spring bridges still had some play in them.. but I guess that play is necessary so it does not wear out the tops of the bridges. Basically the same play you have when the valves are closed

[@jonathanjohnson7131]

Great job. Question though I have a 2015 ram 5500 and I know there is some difference between the motor that's in the 3500 and the 5500 but I wouldn't think it would be no difference in the valve adjustments if there is please tell me the valve adjustments?

[@williammiller7214]

Great video. How do I do an EGR delete on my 09 Ram 2500 6.7. Another question, when I tow my 5th wheel and start up an incline my truck starts to buck until I drop it down to a lower gear. Any ideas? Thanks and keep up the good work. Bill

[@horaciolujano572]

Thanks bro You help

[@Fastcarsforme]

Thanks for adding this video! I have a Gen 5, non delete cause I'm in BC and DOT are being dicks, with 65k....what interval would you recommend to set valves?

[@jonathanwharton5837]

Quick question, I saw you turn the harmonic balancer bolts to rotate the engine, is there any fear of snapping those bolts? is using the barring tool easier?

[@johnwilliams911]

Good one 👍

[@manuelibarra9076]

Great video , how do you torque the nut to 18 foot pounds? Do you just go with a regular socket and torque wrench after you tighten it , or do you have to use a specific tool socket to be able to hold the Allen bolt while torquing it.?

[@darkirondiesel]

Personally I just snug them up by hand, but if you wanted to be technical I would first tighten it up by hand gently with a wrench, then remove the Allen key and use a socket and torque wrench to torque it, then after recheck valve lash to make sure the Allen bolt didn’t tighten up on you.

[@user-od9jh3he8j]

Thanks, we'll done.

[@johnnylightning1491]

Do you know if the procedure and lash is the same on a 6.7 in an International Durastar 4300? Actually looks pretty easy except for the access to the back cylinders.

[@thomas73704]

Cylinder 5 exhaust pushrod sitting properly but higher than others and not getting rocker loose enough to get any lash adjustment. You think rod problem?

[@timwilliams3662]

Is the push rods on those 6.7 are they two different sizes for the intake and exhaust are they all the same size

[@Tk1776.]

Great video, where did you buy the feeler gauges at?

[@darkirondiesel]

Hey buddy, I've had a few people ask me this so I just put the link to them at the top of the description! I bought them locally off a tool truck but the ones I linked are the exact same ones I have.

[@srtdonmega]

Wait you’re going by cylinder position not firing order?

[@ecko5212]

I have a 2012 got it when it 90k. It now has 184k. I have never had them adjusted. Never had a head gasket go bad. Mater of fack never had any problems with the engine. Do I need to get the vales adjusted?

[@broncoal6066]

Great explanation thanks! I have 2 suggestions. One, when you get TDC mark the bottom of the damper. Helps easily get TDC again. Second, when making a video turn off the shop radio.

[@GetBusyDrift]

can you do a video on cleaning egr on 6.7 cummins

[@jeebraapskiii5848]

Some guys like doing .020 on the exhaust would you agree ? Thanks

[@simplyhandy2769]

Wow. Im a bit late but thank you!

[@BoostedVQUR]

Would it be a good idea to replace the valve seals while doing this given it’ll be apart? If so, I’ve heard of seal damage if not using a sleeve when pressing the seal over the groove in the valve stem. True? If so, do you sell a tool for this reason. I know Cummins has a tool, but it’s ungodly expensive for what it is. I’ve heard people use items such as straws to heat shrink.

[@juanmedina7378]

Gracias muy vien esplicado

[@albertoperez9425]

Good evening, I have a question, I did a head gasket on a 2012 ram 6.7L now it's hard to start, when finally run blows white smoke and blows diesel from the EGR.

[@THEBAROPER2012]

Also bit of advice. If you set lash with engine cold, set .002” loose from spec to account for thermal expansion, then when engine hot the lash adjustment will be on spec or very close

[@yeahboi355]

The setting account for the engine hitting up. By doing what you say the valve lash will be wrong when the engine is hot.

[@timwilliams3662]

Trying to figure out why when I turn the motor with the ratchet the rocker bridges pop off put a new head gasket on and don't know if I got all the rocker arms in the right place I'm pretty sure I did but I'm having trouble with that when I'm turning the motor making a big pop and sound and the bridge comes off into the engine

[@Ken-wu6hr]

Question. I’ve been an Auto Mechanic/ Technician for over 30 yrs. I just did a 6.7 Cummins head. But I used the starter & a remote starter button. Bumped the starter till the cylinder I’m working on both valves closed. Than set or adjust that cylinder & move on. I’ve been doing it that way since my racing days with SBC. Just easier for me. I work by myself.

[@darkirondiesel]

You could do that but I’d worry that if I showed that procedure someone with less mechanical knowledge might end up with a bent pushrod or worse.

[@5thdayadventures]

How often is it recommended to the lash?

[@darkirondiesel]

I’m actually not sure. Probably be a good idea to check it every 100,000 miles in my opinion but not sure on the actual service manual.

[@michelsanchez7057]

When you do this type of job do you need to get any new gaskets?

[@darkirondiesel]

Nope you shouldn’t need to. You can just reuse the valve cover gasket/injector harness

[@donaldgould7623]

Thanks this question and answer helped a lot

[@358trucking]

Yes, it’s true that you can reuse the gaskets BUT you need to inspect them closely for any tears or damage before considering reusing them. Happy Valve Setting. Once your past cylinders 5&6 your home free. 🤣🤣

[@kenworthcustomlogisticstru8096]

What do you charge for a head gasket, fuel injector replacement for a bigger turbo and bigger fuel injector

[@darkirondiesel]

There’s so many variables. What kind of injectors? Stock, reman, new, higher hp? What size of turbo? Are we doing vgt or non vgt? If non vgt then we gotta do tuning. Is the truck deleted? Which head studs do you want? Etc etc. Would take an hour or two to price something like that out. I’d do it for someone local to me but unfortunately I don’t have time on KZbin if you know what I mean.

[@kenworthcustomlogisticstru8096]

@@darkirondiesel what does vgt stand for and it's a 2005 Dodge dually 3500 SLT quad cab Long bed with the 5.9 Cummins and it does not have any of dpf and Def on it because i a 2005 also it my Dad truck and he wants to put in bigger fuel injector as well as a bigger turbo also the truck doesn't run very good right now because of bad fuel injector and it idle very rough and also do you have your own shop

[@darkirondiesel]

Oh if it’s a 5.9 then it won’t have dpf or a vgt (variable geometry turbo) where are you located? I’m in Saskatchewan Canada

[@Freddyflintstones]

What do you recommend lash to be set at on a deleted 6.7 any difference ?

[@chad1107]

Some guys say 10 thousand intake and 20 thousand exhaust. That's what it is on all the pre emissions 5.9. They went to 26 thoudands on the 6.7 to keep exhaust temps down during regeneration. This is what I've always heard

[@donaldgould7623]

So on a deleted 6.7 exhaust should be 26 thousands or 20?

[@Freddyflintstones]

@@donaldgould7623 20 exhaust 10 intake

[@jerryebersole2441]

is this the same procedure for a 2018 24 V common rail 6.7 ?

[@darkirondiesel]

I’m pretty sure yup

[@adamhumphers3605]

I have a 5.9 Cummins with a 6.7 head. I don't have a tdc mark on my balancer. How can I find tdc with the head on. Used a barring tool to bump engine over. Set the valves to 5.9 specs (.010 intake.020 exhaust) and have a faint knock upon acceleration. I'm going to re run the valves any tips

[@believer9536]

Hello bro, I got the same problem today! Can you provide your way of solving that problem? No TDC mark on mine also...

[@4wdiesels]

I watched this even though my 2019 had this maintenance procedure removed due to the use of hydraulic roller lifters. I am torn on what's better. I feel that this wasn't really much maintenance especially at it's mileage intervals. The flat tappet lifters are proven super reliable in this application. Hydraulic roller lifters can get wiped out with a tiny amount of oil contamination. I guess time will tell but I just don't see a roller lifter lasting 500k miles or longer. Any ones thoughts?

[@darkirondiesel]

Personally I’d prefer this style. I’ve seen too many hydraulic lifters fail over the years.

[@redfox0099]

What year did they switch to the hydraulic roller lifters? I have a 2014 is why I ask. Thanks

[@robbennett7593]

Hello do you know where I can find the specks for a 2017 6.9

[@darkirondiesel]

Google

[@johnneryvergara5382]

Qsb6,7 hows to timing setting

[@Hendogg28]

On the deleted trucks isn’t it the same as the 5.9’s at the 10/20 just the none deleted ones are 10/26.. Or that’s what I’ve read on a lot of forums.. Or am I incorrect?

[@darkirondiesel]

Yeah 10/20 is fine on a deleted truck, if you do 10/26 that’s going to be fine too. Honestly the “in spec” range is so wide with these trucks that as long as you’re close it shouldn’t matter too much

[@Rocko1983ify]

Trans in neutral?

[@darkirondiesel]

Just in park. If you have a standard you’d wanna throw it in neutral

[@Rocko1983ify]

@@darkirondiesel thanks, truck is ticking at idle so giving this a shot. Watching your videos down here in Pflugerville Texas.

[@337slab8]

What if my balancer is rusted?

[@darkirondiesel]

Grab a wire brush and try to clean it off. You should be able to find it

[@337slab8]

@@darkirondiesel what if I need the sauce on my 08 6.7 lol

[@THEBAROPER2012]

Cylinder 1 and cylinder 6 are on tdc at the same time. Just opposite strokes. Too much information for people who are attempting this is confusing. Go off your rocker arms. If the rockers are loose on cylinder 1 and tdc position is correctly at 12 o’clock, then you are on the compression stroke and can run intake 1,2,4 and exhaust 1,3,5. Then just rotate clockwise 360 back to tdc and repeat procedure for the other valves. It’s much more simple that way. If you rotate up to tdc avd cylinder 1 exhaust rocker is tight then you know you’re on the exhaust stroke. Other than that it’s good information. Specs are accurate

[@believer9536]

Hello, thanks for the concise information! Also maybe you know, how do I set TDC position if the mark is erased?

[@StayingBack71]

Ive been taught to run overheads on larger diesel engines 11 liter and larger.......Now o the larger diesels- The running mates are the same, Now I have to Adjust the Intake,exhaust,Injector and Engine Brake (If equipped) Now....How come the smaller diesels dont have injector adjustmentd- Is it because they aren't overhead cam? Im still learning to work on different motors

[@darkirondiesel]

You’re probably working on an older Diesel engine that has mechanical injectors which is why you’d have to adjust them... I think anyways.

[@StayingBack71]

@@darkirondiesel No, They are post 1993 all injectors electronically fired with harness. You have to set the Height on many (Except a 14 liter Detroit) Turn the Motor by hand repeat on companion cylinders......Im trying to learn the fundamentals on the Smaller stuff you are working on- What needs to be run on an overhead

[@chiefhoppy497]

@@StayingBack71 you are adjusting the injectors because they are mechanically fired by the cam/cams on over head cam diesels, on a mechanical injected truck the injection pump controls the injectors firing, on a electronic smaller diesel like these where there’s pushrods they are fired by the solenoids on top of the injectors

[@wanderingquestions7501]

12 valves on Cummins 6.7?

[@darkirondiesel]

There’s 24 but they get actuated two at a time because of the valve bridges

[@colbyc.6698]

I set my intake to 10 and exhaust to 21

[@dougstadel9310]

Why do others call a 6,7 a 4 valve

[@darkirondiesel]

Ive never heard anyone call it that 🤷🏼‍♂️

[@charlesfletch21]

It has 4 valves per cylinder. There's a split arm that pushes both intake on one rocker and both exhaust with one rocker

[@shauncooper957]

Set Them @ 12V Specs, .08 & .18, Then Thank Me Later.

[@anthonystaggs6239]

in depth description all the way through....is this even YT? lol

[@tristen2264]

Idk wtf is going on I rotate the engine and the valves that are supposed to be loose aren’t 😂