Valve adjustment

Reply Subscribe

Thread Tools

Search this Thread

Jan 28, 2004 | 07:48 AM

Txwelder

Thread Starter

Registered User

Joined: Jan 2004

Posts: 1,677

Likes: 1

From: Texas

Valve adjustment

My 96 2500 4x4 is stock with 122k. How much economy will I see in my fuel consumption after a valve adjustment. Im getting around 14.4 right now in town and I dont use the overdrive unless over 50 mph. How much can I expect to pay for a valve adjustment? Also, Does anyone have a part number for a round air filter that will go in place of my air box if I put an adapter on the end of my air inlet hose. I got a number from a fellow TD owner, #2790 from Napa but that number didnt work. Any help would be appreciated.

Jan 28, 2004 | 09:57 AM

y-knot

Banned

Joined: Aug 2003

Posts: 609

Likes: 0

From: Kentucky

I am not sure about picking up any MPG after the adjustment. But I have had mine adjusted twice, once for it's 25,000 mile check (yes they were out and no it wasn't a waste) and when I had the 60# springs installed. Both times the engine ran quieter, and better, but I never figured the mileage. You can expect to pay 75-90 dollars for the adjustment.

Jan 28, 2004 | 10:02 AM

HammerMTB

Registered User

Joined: Oct 2003

Posts: 76

Likes: 0

From: NW Washington

It's unlikely you will see any change in your mileage from a valve adjustment. There are so many mileage variables greater then valve adjustment that those overshadow any miniscule change it might make.
Someone will chime in with the BHAF filter #, I'm sure. I don't know it, but it's common, and may even be on this site somewhere. If you don't get a response soon, poke around!

Jan 28, 2004 | 12:49 PM

infidel

Registered User

Joined: Dec 2003

Posts: 14,672

Likes: 9

From: Montana

My experience has been that most 12 valves only need the valves adjusted twice, once at 25k again at 50k. After that they don't seem to move but should probably be checked every 100k.
Never noticed any mpg gains adjusting the valves.

Jan 28, 2004 | 07:37 PM

Txwelder

Thread Starter

Registered User

Joined: Jan 2004

Posts: 1,677

Likes: 1

From: Texas

Well I just picked this 12 valve up and it is my first CTD. I am very happy with it but want to get a baseline as far as a maintenance schedule is concerned. I have no records or anything. With 122k on it Im something needs replaced. I got it for $8900 so Im not complaining.

Jan 28, 2004 | 07:38 PM

yrusoslow2

Registered User

Joined: Aug 2002

Posts: 203

Likes: 0

From: Solomons, MD

I like to check mine every 24,000 milkes but I have never really seen any mpg increase by doing so.

Jan 28, 2004 | 09:51 PM

BoostnBenz2

Guest

Posts: n/a

Not as a fellow CTD owner but my MB has a cast head in it which is supposed to be adjusted every 25k miles or so as well, there generally isn't a noticeable difference in mileage however it generally idles better and has just a little more off the line power. Maybe it isn't real important here but on our motors it is generally a good idea to run it hard to clean any carbon off the valves before adjusting them. Normally the valves don't move much, while I'll probably check every 25k miles I bet most of the times it won't need anything or very little adjustment.

Valve adjustment

Valve adjustment

Trending Topics