7.3 liter compression

Reply Subscribe

Thread Tools

Search this Thread

Aug 20, 2004 | 07:39 PM

bell47g2

Thread Starter

Freshman User

Joined: Mar 2004

Posts: 31

Likes: 0

From: South LA

7.3 liter compression

I'm trying to find out what the compression pressures should be for the 7.3 liter navistar diesel as found on the F-250's. Anyone have a clue?

Aug 20, 2004 | 07:49 PM

Dave Sponaugle

Post Fiend

Joined: Nov 2003

Posts: 21,285

Likes: 16

From: Nutter Fort, WV

What year and motor type?
IDI motors were 22.5 to 1
Power Strokes were 17.5 to 1

Aug 22, 2004 | 11:23 PM

bell47g2

Thread Starter

Freshman User

Joined: Mar 2004

Posts: 31

Likes: 0

From: South LA

It is a pre power stroke, 1988 model F-250. I'm getting about 400 psi compression pressure on my '93 model.

Aug 23, 2004 | 08:58 PM

Dave Sponaugle

Post Fiend

Joined: Nov 2003

Posts: 21,285

Likes: 16

From: Nutter Fort, WV

400 to about 420 is about normal
Is it even on all the cylinders?

Aug 23, 2004 | 10:14 PM

bell47g2

Thread Starter

Freshman User

Joined: Mar 2004

Posts: 31

Likes: 0

From: South LA

Yes it is pretty even on all cylinders on my '93.
I checked the '88 truck and it ranges from 320 to 390 cold.
I wasn't sure if that was low enough to make it harder starting.

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last

Forum Jump