A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Broken Timing Belt : Compression Test to diagnose valves?

Thread Tools
 
Search this Thread
 
Old 12-24-2005, 08:27 AM
  #1  
Member
Thread Starter
 
SCd_Walter's Avatar
 
Join Date: Aug 2003
Posts: 2,079
Likes: 0
Received 0 Likes on 0 Posts
Default Broken Timing Belt : Compression Test to diagnose valves?

My brother broke his TB on his 1.8t Passat and I just took a quick look at it and could see marks on all 4 pistons from the valves when I looked down the spark plug holes. I'm assuming to do a compression test I'm going to have to replace the belt? Just checking efore I waste my time.
Old 12-24-2005, 08:32 AM
  #2  
FAQ Author
 
BSK auf Arbeit's Avatar
 
Join Date: Jan 2005
Posts: 6,984
Likes: 0
Received 6 Likes on 6 Posts
Default

engine top rebuilt
Old 12-24-2005, 08:33 AM
  #3  
Keeper of the Cash
 
Nate (ETKA+Scumbag)'s Avatar
 
Join Date: Sep 2004
Location: Iowa
Posts: 26,522
Likes: 0
Received 2 Likes on 2 Posts
Default

Won't work if the cylinders can't seal to create compression.
Old 12-24-2005, 08:34 AM
  #4  
Member
Thread Starter
 
SCd_Walter's Avatar
 
Join Date: Aug 2003
Posts: 2,079
Likes: 0
Received 0 Likes on 0 Posts
Default

duh, that's why I'd want to do the compression test, figure out which if any cyls had valve issues
Old 12-24-2005, 08:35 AM
  #5  
Head Cat Herder

 
Kris Hansen's Avatar
 
Join Date: Oct 1998
Posts: 66,550,451
Received 85 Likes on 48 Posts
Default Yes, you'd have to put a new belt on to test compression... If they made contact, you're looking at

valves at least, if not more.
Old 12-24-2005, 08:41 AM
  #6  
Keeper of the Cash
 
Nate (ETKA+Scumbag)'s Avatar
 
Join Date: Sep 2004
Location: Iowa
Posts: 26,522
Likes: 0
Received 2 Likes on 2 Posts
Default

Its easier just take the top off, look at it in detail then go purchase/go by what a gauge might do
Old 12-24-2005, 08:42 AM
  #7  
Member
Thread Starter
 
SCd_Walter's Avatar
 
Join Date: Aug 2003
Posts: 2,079
Likes: 0
Received 0 Likes on 0 Posts
Default that's what I figured. I'm thinking I'm going to tell him to look elsewhere for assistance

on my 3 days of vacation I don't think i have the time nor patience to deal with this.
Old 12-24-2005, 08:43 AM
  #8  
Member
Thread Starter
 
SCd_Walter's Avatar
 
Join Date: Aug 2003
Posts: 2,079
Likes: 0
Received 0 Likes on 0 Posts
Default Good point, maybe I should pull the head, any writeups on head pulling on a 1.8t

or should I just go crazy? I'm sure I could get it off w/out much issue. As long as I don't have to put it back together.
Old 12-24-2005, 08:45 AM
  #9  
AudiWorld Member
 
Josh5442's Avatar
 
Join Date: May 2005
Posts: 441
Likes: 0
Received 0 Likes on 0 Posts
Default Thread jack: BSK I found an error in the FAQ... in your original post you say

"Welcome to the Audi A4|B5|8D FAQ, started by members of the Audiworld B5 Board from all other the world!"

I'm guessing you meant "From all over the world"... Just letting you know.
Old 12-24-2005, 08:46 AM
  #10  
Member
Thread Starter
 
SCd_Walter's Avatar
 
Join Date: Aug 2003
Posts: 2,079
Likes: 0
Received 0 Likes on 0 Posts
Default

lol


Quick Reply: Broken Timing Belt : Compression Test to diagnose valves?



All times are GMT -8. The time now is 07:36 AM.