7.3 Compression Test Procedure - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 5 Old 07-06-2009, 05:28 PM Thread Starter
Compression Ignition Addict
 
Dallas4x4's Avatar
 
Join Date: Jan 2008
Location: BC
Posts: 2,096
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
7.3 Compression Test Procedure

What is the procedure to do a compression test on my powerstroke??

-Disconnect valve cover gasket
-pull glow plugs
thread in compression tester
crank engine by starter???
orrr??

1994.5, 2.5 lift, 35s on 17x10 MHTs, Intercooled, Stage 3 injectors, Nitrous, 6637, Water/Meth, 3" DP, 4" Magnaflow, IDM, TS Chip, 4.10s, 33s, 4 Pod pillar. 6000k HIDs.

Converted From ZF5 To E4OD w/ PCS TCM-2000 Tuneable Trans Computer, 6.0L Trans cooler and Triple Disc TC.

Up next Install electric fuel, ladder bars
Dallas4x4 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 07-07-2009, 12:41 PM
Compression Ignition Addict
 
gmsmith36's Avatar
 
Join Date: Apr 2009
Location: Bakersfield
Posts: 484
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
disconnect the ecm power. remove all injector. or if it is done through the glow plugs then remove all glow plugs. remove the air filter. the engine needs to crank at 175 rpm 4 a minimum. Record your readings on paper.

do not remove the injectors, they test it through the glow plug hole. remove all glow plugs. Best done when engine is warm. If any are low squirt about a tblspn of oil into the glowplug hole and retest. if it comes up rings or scoring is the problem.

a better way to analyze the condition is leak down test and follow with a borescope inspection.

gmsmith36 is offline  
post #3 of 5 Old 07-07-2009, 01:28 PM
Compression Ignition Addict
 
OregonStroker's Avatar
 
Join Date: Mar 2007
Location: Portland Oregon
Posts: 2,023
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
i would opt for the leak down like gmsmith says. its the simplest and best way. should be 350-400 psi across the board. anywhere in the 365-375 is good.

Built engine, rods, pushrods, cam, springs. Meth, turbo, injectors, fuel system, oil system. 3 disk billet, billet shafts built trans, 6.0 IC, exhaust, intake. Latter bars, gears, system, tint, HIDs. You know the typical stuff to make a 7.3 get out of its own way... dont brake.
OregonStroker is offline  
post #4 of 5 Old 07-07-2009, 06:21 PM Thread Starter
Compression Ignition Addict
 
Dallas4x4's Avatar
 
Join Date: Jan 2008
Location: BC
Posts: 2,096
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
How do you do a leakdown test?

I just pull the glow plugs on one side and now going todo the other side

1994.5, 2.5 lift, 35s on 17x10 MHTs, Intercooled, Stage 3 injectors, Nitrous, 6637, Water/Meth, 3" DP, 4" Magnaflow, IDM, TS Chip, 4.10s, 33s, 4 Pod pillar. 6000k HIDs.

Converted From ZF5 To E4OD w/ PCS TCM-2000 Tuneable Trans Computer, 6.0L Trans cooler and Triple Disc TC.

Up next Install electric fuel, ladder bars
Dallas4x4 is offline  
post #5 of 5 Old 07-07-2009, 07:01 PM
Compression Ignition Addict
 
OregonStroker's Avatar
 
Join Date: Mar 2007
Location: Portland Oregon
Posts: 2,023
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
id pm dirk

Built engine, rods, pushrods, cam, springs. Meth, turbo, injectors, fuel system, oil system. 3 disk billet, billet shafts built trans, 6.0 IC, exhaust, intake. Latter bars, gears, system, tint, HIDs. You know the typical stuff to make a 7.3 get out of its own way... dont brake.
OregonStroker is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel 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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


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

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



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