'95 Dropped Valve - Ford Powerstroke Diesel Forum

 
LinkBack Thread Tools Display Modes
post #1 of 3 Old 01-10-2011, 08:40 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Nov 2010
Location: Charlottesville, VA
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
'95 Dropped Valve

Hello,

I recently purchased an 95 PSD 5spd extended cab with a non-running motor. It has 218,000 miles on it. The previous owner said he was driving home one night, and the engine started missing and dumping some smoke. This happened about 1/2 mile from his in-laws', so he coaxed it into their driveway and let it idle for about a minute, and the engine stopped with a clunk.

He tried turning it over, and the motor would not turn. Ultimately, he pulled the drivers side valve cover (which he had bent a pushrod in a few months previously) and found that the 2nd cylinder back had a loose valve stem.

I bought it in this condition, and finally over the weekend got the head off. There is a dropped valve that is now fused with the piston, and the piston is cracked down the middle. Additionally, the head is scarred where the valve chunks smashed into it.

Aside from this cylinder, the others look really good. I can still see the factory cross hatching and no scarring is visible on the other cylinders.

So, my questions center around what I do now.

It looks like the combustion chamber in the head was pressed in -- can this be replaced? There is some damage in the head that looks like it could be machined out with minimal loss of surface area. The dropped valve's seat appears damaged (looked like the valve struck the seat), but a valve job may be able to fix it.

I have not attempted to turn the motor, would it be ill-advised to rotate the motor enough to have the piston move down the cylinder to check the wall for damage/cracking? Should I just pull the piston out of the head and inspect following that? If the wall is damaged, can I re-bore just that cylinder? Are there replacement sleeves available?

Is this a type of engine damage that is rare? Is it caused by poor maintenance, or specific behavior of some kind by previous owners?

Thanks in advance for any thoughts or advice.

I have included some pictures of the carnage.




RedDawn is offline  
post #2 of 3 Old 01-10-2011, 08:50 AM
Winning DUHHH


 
Young-SC-Owner's Avatar
 
Join Date: Sep 2010
Location: Sunrise Beach, MO
Posts: 2,389
Thanks: 0
Thanked 12 Times in 12 Posts
Mentioned: 0 Post(s)
Quoted: 8 Post(s)
Feedback Score: 0 reviews
Wonder why it keeps asking for a password when i click on this post?
Young-SC-Owner is offline  
post #3 of 3 Old 01-10-2011, 08:55 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Nov 2010
Location: Charlottesville, VA
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Should be fixed now, I linked to some pictures that were on an access controlled site. Sorry about that.
RedDawn 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