7.3 Missing, Fails Cyl Contribution 1 and 3 - Ford Powerstroke Diesel Forum

 
LinkBack Thread Tools Display Modes
post #1 of 5 Old 06-27-2013, 09:24 AM Thread Starter
Compression Ignition Addict
 
rolsmojave3's Avatar
 
Join Date: Feb 2008
Posts: 793
Thanks: 4
Thanked 5 Times in 5 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
7.3 Missing, Fails Cyl Contribution 1 and 3

Truck is missing, failing the cylinder contribution test on 1 and 3. Passes Buzz test. Shop Replaced UVCH, engine harness, IDM. When I first starting working on truck, It would fail 1, 3 and 5. Now we're down to 1 and 3. UVCH looks good, Ohms out OK. Injectors have oil coming from the spills.

I believe this to be fuel related, is there a check or restriction on the front of the head, causing these 2 cyl to not get fuel? Fuel pressure is holding at 60psi with pump running. Any thoughts, Thanks!

1997 Ford F-350 4x4 SRW regular cab manual trans.
-Rosewood 160cc, 17*HPOP, EPBV delete, 4.10s, 315/75r16

1996 Ford F-350 4x4 SRW CCLB manual trans. CALI spec
-ATS intercooler, WW2 w/ 1.0 housing/EPBV delete, Comp 910s, SD Efuel, 3.55s, 315/75r16

2002 Ranger FX4 with manual transfer case and Alcoa's
rolsmojave3 is offline  
post #2 of 5 Old 06-27-2013, 03:17 PM
Compression Ignition Addict
 
blue99stroker's Avatar
 
Join Date: Oct 2011
Location: Chico, California
Posts: 4,950
Thanks: 18
Thanked 210 Times in 201 Posts
Mentioned: 1 Post(s)
Quoted: 135 Post(s)
Feedback Score: 0 reviews
did you try replacing the cps?

thats like 25 bucks.

99.5 f250 7.3 4x4 258k
PHP Phoenix, S&B CAI, 4" TBE, Hpx, Stancor, RR Billet Wheel, AIH Delete, Autometer Gauges, Leveling kit, Transgo kit, Warn Hubs, Int'l Up-Pipes, RR IC Boots, Non-Ebpv Pedestal, High Flow Outlet, RR OCR, 08 Tow Mirrors.

Dad-2000 7.3 109k miles, Autometer Gauges, Superchips 1705, AIH Delete, 6637, 4" TBE, BD Billet Wheel, TruCool Max
blue99stroker is offline  
post #3 of 5 Old 06-27-2013, 04:02 PM
Compression Ignition Addict
 
jesilvas's Avatar
 
Join Date: Feb 2009
Location: Nacogdoches, TX
Posts: 11,148
Thanks: 0
Thanked 27 Times in 25 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
This is an OBS right?
Either way, I'd replace CPS too. Could be because of this - Black, Grey, & Dark Blue Cam Position Sensor Perdels Test - Diesel Forum - TheDieselStop.com



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
jesilvas is offline  
post #4 of 5 Old 06-27-2013, 08:40 PM Thread Starter
Compression Ignition Addict
 
rolsmojave3's Avatar
 
Join Date: Feb 2008
Posts: 793
Thanks: 4
Thanked 5 Times in 5 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
No it's a Superduty. Turns out, through very thought out process, it was air in the passenger fuel rail. Removed the front plug, bled system, truck runs great, customer very happy!

1997 Ford F-350 4x4 SRW regular cab manual trans.
-Rosewood 160cc, 17*HPOP, EPBV delete, 4.10s, 315/75r16

1996 Ford F-350 4x4 SRW CCLB manual trans. CALI spec
-ATS intercooler, WW2 w/ 1.0 housing/EPBV delete, Comp 910s, SD Efuel, 3.55s, 315/75r16

2002 Ranger FX4 with manual transfer case and Alcoa's
rolsmojave3 is offline  
post #5 of 5 Old 06-27-2013, 08:41 PM Thread Starter
Compression Ignition Addict
 
rolsmojave3's Avatar
 
Join Date: Feb 2008
Posts: 793
Thanks: 4
Thanked 5 Times in 5 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Previous shop replaced #3 injector, UVCH, and IDM.

1997 Ford F-350 4x4 SRW regular cab manual trans.
-Rosewood 160cc, 17*HPOP, EPBV delete, 4.10s, 315/75r16

1996 Ford F-350 4x4 SRW CCLB manual trans. CALI spec
-ATS intercooler, WW2 w/ 1.0 housing/EPBV delete, Comp 910s, SD Efuel, 3.55s, 315/75r16

2002 Ranger FX4 with manual transfer case and Alcoa's
rolsmojave3 is offline  
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