valve adj. interval

[JMcCoy]

Does anyone out there know what the valve adjustment interval is on the 2003-2004. 5 cummins?

 

[SAvery]

I am not 100% sure if this is correct, but... I heard that because the lifters on the new engines are hydraulic, that valve adjustments are not necessary. If I am wrong, someone let me know because then mine are overdue

 

[GFritsch]

When I looked through the new owners manual there was no mention of valve adjustment. I don't have the service schedule available right now, but I believe it went to at least 120k.

 

[DPKetchum]

By the Book every 150k

 

[timjones]

I am not 100% sure if this is correct, but... I heard that because the lifters on the new engines are hydraulic, that valve adjustments are not necessary. If I am wrong, someone let me know because then mine are overdue

Nope they are mechanical, adjust every 100k

 

[DPKetchum]

Nope its every 150k unless major engine repair. The old 12 valves were first 24k and every 48k. The 2nd generation was I think at 124k and it was extended on third generatioj to 150k. Of course YOU can adjust them anytime you wish and the procedure has not changed from the 12 valve days just more of them.