400 compression psi?
Thread Starter
|
Tuned
Joined: Jul 2009
Posts: 432
Likes: 0
From: Lowell, MI
400 compression psi?
tried the search function---got way too confused for my own good.....ran a compression test on my F250 today (400 cid) and got numbers ranging from 95 psi to 125psi. What numbers are they supposed to be? still seems to run strong, other than the timing and carburetor issues i have with it....
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
The generally accepted rule of thumb is they should all be within 10% of each other. If it
were mine, I'd probably next do a leak down test because
were mine, I'd probably next do a leak down test because
- They're not within 10%, and
- A reading of 95 PSI is kinda low IMHO.
Thread
Thread Starter
Forum
Replies
Last Post
marshallstanford
1999 - 2003 7.3L Power Stroke Diesel
12
Jul 15, 2016 06:42 AM
GuitarJesus
1987 - 1996 F150 & Larger F-Series Trucks
1
May 5, 2016 07:28 PM
phil_idi
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
15
May 20, 2013 10:13 PM
blazinjames
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
7
Jun 28, 2012 06:22 PM
