#5 Cylinder Low Compression - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 8 Old 01-14-2014, 01:02 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2013
Location: Perry, GA
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
#5 Cylinder Low Compression

OK, I finnally did a compression test on the E99 F350! I did the test because the truck has 317k and good amount of blow by. All cylinders were at 370psi cold (had some problems with Everything and did not get a chance until later in the evening after the engine had cooled) Except #5 had about 100psi. I moved injectors from #1 to #5 and the same Results. So it has to be the rings or a cracked piston??? I would like to pull the head to see what the cylinder and piston looks like.

So I guess were I need help is figuring out what too do next?
1. Put back together and drive as is.
2. Pull head and investigate.
3. Can I replace only one piston? Is that good for the motor?
4. Pull motor rebuild it!

Money is not growing on my trees so a fix that will not braek the bank would be nice.

Thank you in advance for the help
Fursch is offline  
post #2 of 8 Old 01-14-2014, 01:08 PM
Compression Ignition Addict
 
dannanw's Avatar
 
Join Date: Mar 2010
Location: Colorado
Posts: 5,293
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
Thanks: 7
Thanked 72 Times in 65 Posts
Garage
Feedback Score: 0 reviews
you could re-do just the one, but it could be burnt valve along with the others you mentioned...depends on how long you plan on keeping it what you do. not cheap in any case

What this nation needs is cleaner thoughts and dirtier fingernails...
dannanw is offline  
post #3 of 8 Old 01-14-2014, 02:15 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2013
Location: Perry, GA
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Burnt valves? I'll do a leak down test tonight and see what that give up! Thanks
Fursch is offline  
post #4 of 8 Old 01-15-2014, 07:24 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2013
Location: Perry, GA
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
OK, got the head off last night and the #5 cylinder has a crack in it. the cylinder wall looks really good. So I think I'm just going to replace just that cylinder and get the head check and call it a weekend.
Does any one have good or bad information on replaceing just one cylinder?
Fursch is offline  
post #5 of 8 Old 01-15-2014, 07:34 AM
Compression Ignition Addict
 
dannanw's Avatar
 
Join Date: Mar 2010
Location: Colorado
Posts: 5,293
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
Thanks: 7
Thanked 72 Times in 65 Posts
Garage
Feedback Score: 0 reviews
it's not ideal but not bad...I'd have it honned and put new rings in the others just because you have it that far doing hone and new rings aint much more work just my

What this nation needs is cleaner thoughts and dirtier fingernails...
dannanw is offline  
post #6 of 8 Old 01-15-2014, 11:37 AM
Compression Ignition Addict
 
t-ray-4ray's Avatar
 
Join Date: Feb 2010
Location: bayou vista
Posts: 1,321
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Thanks: 0
Thanked 16 Times in 16 Posts
Feedback Score: 0 reviews
At the miles u are at if you plan on going as far as that one cylinder an head (and I do understand the money issue) if you are capable I would check all main and rod bearings also while apart


Sent from AutoGuide.com App

2000 f-350 4x4 extended cab, went from a flatbed work truck to what you see now, all done by me. Early 99 engine, heavy duty low stall converter, rebuilt trans, all new uvch, rebuilt injectors, all new icp, idm, cps, hutch mod, k&n intake, white valve covers, wicked wheel, 5 inch exhaust, php hydra chip 15pos, 16 inch bullet hole rims painted gloss black, 33x10 wild country mtx, lowered the back level
t-ray-4ray is offline  
post #7 of 8 Old 01-15-2014, 06:32 PM
Compression Ignition Addict
 
79 toy's Avatar
 
Join Date: Mar 2013
Location: Wichita
Posts: 180
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 5
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Is your engine stock or any performance stuff done to it?
79 toy is offline  
post #8 of 8 Old 01-16-2014, 06:37 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2013
Location: Perry, GA
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Well last night, I was able to remove all the oil from the other cylinders, from the injectors and pulling the head. So that I could see the #5 wall, hoping it was going to look like all the other ones! Not the case! I should take a pic and post but it has some deep groves in it. Not sure from what though! So I talked to the shop doing the head for me and said he can hone out the block, clean and check the block for rebuilding, for $400. Add $300 to re-install the crack. It will be about $200 for each head. So now my new questions are where to get a good rebuild kit or get parts a pieces from different places to make a kit? Head stud or bolts? Worth the extra money? And just some good old tips on rebuilding a 7.3. Thanks guys
Fursch is offline  
post #9 of 8 Old 01-16-2014, 06:39 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2013
Location: Perry, GA
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Oh and the engine is stock just have gauges!
Fursch 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