Compression - Diesel Truck Forum -
Thread Details Posted by imported_popsmick12, this thread has received 2 replies and been viewed 1195 times.

LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 08-13-2007, 06:28 PM Thread Starter
Join Date: Dec 2006
Posts: 45
Points: 1,074
Thanks: 0
Thanked 0 Times in 0 Posts

What should the compression be on a 97 7.3 and where can you purchase a tester????
imported_popsmick12 is offline  
Sponsored Links
post #2 of 3 (permalink) Old 08-13-2007, 06:39 PM
Join Date: Apr 2007
Posts: 596
Points: 1,302
Thanks: 0
Thanked 1 Time in 1 Post
Between 400-500psi depending on altitude. I like to see 450 as an average, but it'll vary somewhat with altitude and engine condition. As long as you are over 400 it'll still run OK, when you get cyls dipping into the 300's then it's time to start considering an overhaul.

You can get a compressor guage form places like Snap-On, Cornwell, Matco and OTC. There are several other places that sell the kits such as Diesel Innovations and IIRC ITP does as well. You can also make your own if you have an extra glowplug laying around. Gut it and braze an 1/4" quick-connect air fitting on it and plug it into your compression guage.
1040 WreckerMan is offline  
post #3 of 3 (permalink) Old 08-13-2007, 07:16 PM Thread Starter
Join Date: Dec 2006
Posts: 45
Points: 1,074
Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for the quick reply. I have a gauge that is showing 385 consistently on passenger side. I just don't know if I trust the gauge as the cylinders are very consistent. I am at about 3200 elevation.
imported_popsmick12 is offline  

Quick Reply

Register Now

In order to be able to post messages on the Diesel Truck Forum - forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome