97 powerstroke compression readings
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
I'm unsure of the hypermax headgasket differences but here is some useful info I "Borrowed" from amother site: 
To perform a compression test on this engine, you need to have a diesel compression gauge and a glow plug adapter. Remove all the glow plugs to check any cylinder. Crank the engine at least five revolutions and the same number of revolutions for each cylinder. It would probably be a good idea to have a battery charger hooked up during the test. Ford lists no compression specs for these engine, only stating the lowest cylinder should be no more than 25% lower than the highest cylinder, with a low to high comparison chart showing a range of 195 to 440 PSI.
Ideally the compression should be at least 350 psi.
As you can see this requires special equipment=$$$. Gasoline engine testing equipment cannot handle the higher pressures.
To perform a compression test on this engine, you need to have a diesel compression gauge and a glow plug adapter. Remove all the glow plugs to check any cylinder. Crank the engine at least five revolutions and the same number of revolutions for each cylinder. It would probably be a good idea to have a battery charger hooked up during the test. Ford lists no compression specs for these engine, only stating the lowest cylinder should be no more than 25% lower than the highest cylinder, with a low to high comparison chart showing a range of 195 to 440 PSI.
Ideally the compression should be at least 350 psi.
As you can see this requires special equipment=$$$. Gasoline engine testing equipment cannot handle the higher pressures.
Last edited by Cuda_jim; Jun 19, 2006 at 06:57 AM.
Thread
Thread Starter
Forum
Replies
Last Post
basstardo
1994.5 - 1997 7.3L Power Stroke Diesel
34
Nov 27, 2014 08:27 PM
lil ford mec
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
6
Feb 18, 2014 01:40 AM
Fletch_lives
1994.5 - 1997 7.3L Power Stroke Diesel
2
Mar 23, 2013 10:30 PM
