How to get that new 24v diesel engine sound back?

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Mar 12, 2009 | 10:01 PM

#16

bigsmokey

Registered User

Joined: Jun 2008

Posts: 110

Likes: 0

From: USA

I was told to only adjust valves when you notice a loss in power. so I say if it ain't broke drive it til it does

Mar 12, 2009 | 10:40 PM

#17

Grider Pirate

Registered User

Joined: Nov 2006

Posts: 197

Likes: 0

From: Las Vegas, NV

Quote:

Originally Posted by GFB

Cold temps = advanced timing = different sound. It will quiet down when the ambient temps warm up a little.

Both my trucks are quieter when it's warm, and they're fully warmed up. I checked the valve clearances at the FSM recommended interval (150,000 miles!) and all were within tolerance. Of course, the tolerance is ENORMOUS!

Mar 25, 2009 | 02:48 AM

#18

quicksilvr

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Joined: Apr 2005

Posts: 339

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Just curious what's the story on your truck, you buy it with the low mileage or the original owner?

Mar 25, 2009 | 10:03 AM

#19

johnh

Registered User

Joined: Nov 2002

Posts: 4,053

Likes: 29

From: lyman, utah

i've adjusted my valves twice in 213000 miles and can say it needed it both times, cummins did the first one and i couldn't really tell the difference, i suspect intermountain cummins wasn't as precise as i would like.....i did the last one to the correct specs and i can tell the difference.
it idles smoother makes less noise, and in general runs better