Valve adjustment?
Diesel Wrench
Joined: May 2009
Posts: 614
Likes: 49
From: Colorado Springs, CO
---AutoMerged DoublePost---
So do my valves need adjusted on my 2005 cummins? It keeps makin this knock time sound at random times puffs a little smoke and then it purrs like a kitten and i cant figure it out. It doesn do it goin down the highway and it doesn do it all the time. I put power service injector cleaner in it the other day and it boost the cetain levels and its been really hot didn think about that 
. Could that be my problem?
. Could that be my problem?Last edited by vcustoms86; Jun 16, 2011 at 08:50 AM. Reason: Automerged Doublepost
Thread Starter
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Diesel Fan
Joined: Aug 2010
Posts: 83
Likes: 2
From: Maricopa, Az
My truck is bone stock and I have used fleetgaurd or mopar fuel filters ever other oil change which are about 5k miles. I'm pretty easy on the truck mostley unloaded to and from work and maybe about 2k miles a year pullin my toyhauler to the dunes or camping. Doing the valves will be easy, I have always done all my own work, just wanted to make sure I had all my stuff together before I started. Nothing worse then getting halfway through a job only to realize you don't have the stuff to finish 
Diesel Fan
Joined: Nov 2010
Posts: 58
Likes: 1
From: Clemson / Central SC
Maybe I'm missing something (highly likely), but my factory service manual states that the valves don't need to be adjusted unless a procedure has been performed that impacted the valve/rocker assembly:
The 24–valve overhead system is a “low-maintenance”
design. Routine adjustments are no longer necessary,
however, measurement should still take place when
troubleshooting performance problems, or upon completion
of a repair that includes removal and installation
of the valve train components or injectors.
Can someone clear this up for me? I'm at 122,000 now.
The 24–valve overhead system is a “low-maintenance”
design. Routine adjustments are no longer necessary,
however, measurement should still take place when
troubleshooting performance problems, or upon completion
of a repair that includes removal and installation
of the valve train components or injectors.
Can someone clear this up for me? I'm at 122,000 now.
Diesel Wrench
Joined: Aug 2009
Posts: 803
Likes: 47
From: hopewell pa
the valve cover and rocker box assembly are 2 different pieces the rocker box is bolted to the head and the valve cover is bolted to the rocker box there really is no need to take the rocker box off but both gaskets are reusable.
