Modular V10 (6.8l)  

Dropped Valve

Thread Tools
 
Search this Thread
 
  #1  
Old 08-24-2014, 07:43 AM
erwatt's Avatar
erwatt
erwatt is offline
New User
Thread Starter
Join Date: Apr 2009
Location: Upstate South Carolina
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Dropped Valve

I have a 2000 Excursion with just over 200K miles. A few years back the engine started making a lot of noise and running so rough that it could not be driven. I parked it in the yard and it's been sitting ever since. This weekend I pulled the valve covers and discovered I had dropped a valve. Yes there is a big hole in the piston but it doesn't appear to have damaged the cylinder walls. I don't know if either valve seat was damaged. I wanted to pull the head (passenger side) to get a full assessment of the damage. I'm not sure if it's possible to get to all the head bolts without either pulling the engine or at a minimum of loosening the engine mounts and shifting the engine. Advice on which path to take would be appreciated.
Tks!
 
  #2  
Old 08-24-2014, 04:37 PM
Restlesswildman's Avatar
Restlesswildman
Restlesswildman is offline
Posting Guru
Join Date: Dec 2012
Location: SW Ohio
Posts: 1,644
Likes: 0
Received 2 Likes on 2 Posts
It is possible, others have done it.

It would be just as easy to remove the engine from the front and set it on the floor and work on it.

Start with the front bumper, grill and just keep working backwards. Fenders and hood and transmission stay in place.
 
  #3  
Old 08-24-2014, 10:43 PM
Stewart_H's Avatar
Stewart_H
Stewart_H is offline
Super Moderator
Join Date: May 2004
Location: Central Coast of CA
Posts: 29,376
Received 86 Likes on 79 Posts
It would help to know what engine you have, since you don't have it listed.

Stewart
 

Last edited by Stewart_H; 08-24-2014 at 11:06 PM.
  #4  
Old 08-25-2014, 12:15 AM
Apocalypse's Avatar
Apocalypse
Apocalypse is offline
Lead Driver
Join Date: Nov 2012
Location: Salem, VA
Posts: 8,300
Received 22 Likes on 21 Posts
Where are you located? Finish your profile
 
  #5  
Old 08-25-2014, 06:10 AM
erwatt's Avatar
erwatt
erwatt is offline
New User
Thread Starter
Join Date: Apr 2009
Location: Upstate South Carolina
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Ooops

Guess I forgot one important detail - the engine is the 6.8L V10.
 
  #6  
Old 08-26-2014, 01:58 AM
Stewart_H's Avatar
Stewart_H
Stewart_H is offline
Super Moderator
Join Date: May 2004
Location: Central Coast of CA
Posts: 29,376
Received 86 Likes on 79 Posts
Originally Posted by erwatt
Guess I forgot one important detail - the engine is the 6.8L V10.
Thank you.

Sending this off to the V10 forum where they can get you all squared away.

Stewart
 
  #7  
Old 08-28-2014, 08:33 PM
speakerfritz's Avatar
speakerfritz
speakerfritz is online now
Hotshot
Join Date: Jul 2013
Posts: 10,692
Received 993 Likes on 763 Posts
hole in piston means metal fragments in the oil sump. oil pump is designed to protect the oil filter so it is likely there is metal chip damage .

I read somewhere you can not pull the oil pan with out removing the engine and with out the oil pan out you will not be able to replace the piston with the hole in it.

also, I don't want to sound like an a$#, but last year I traded in a 2000 expedition with 70k miles on it which had a 1700 set of 22 inch rims and only got 1500 for it and traded in a 2001 navigator with 85k miles on it and got 3000. so not sure if I would spend a whole lot of time and money on repairing a 14 year old vehicle with 200k miles....might be better to donate to iron lung or something and get a write off.
 
  #8  
Old 08-28-2014, 08:53 PM
rvpuller's Avatar
rvpuller
rvpuller is online now
Moderator
Join Date: May 2004
Location: Home Base Nebraska
Posts: 6,043
Received 431 Likes on 282 Posts
That old and hole in piston I would look for a salvage yard motor, 2000 to 2004 will work.

Denny
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
YooperUno
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
2
10-10-2015 06:10 PM
Eric Kropp
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
9
12-03-2014 10:27 PM
f2fitty
Modular V8 (4.6L, 5.4L)
8
12-17-2006 12:33 AM
sdloe
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
13
01-05-2004 02:49 PM
frankster123
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
5
05-07-2003 05:36 PM



Quick Reply: Dropped Valve



All times are GMT -5. The time now is 11:00 PM.