Starting valve job/ead replacement after timing belt failure (2.8 12V) - AudiWorld Forums

Go Back  AudiWorld Forums > Audi Models > Audi A4 > A4 (B5 Platform) Discussion
Reload this Page > Starting valve job/ead replacement after timing belt failure (2.8 12V)
Notices
A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ
Sponsored by:
Sponsored by:

Starting valve job/ead replacement after timing belt failure (2.8 12V)

Reply

 
 
Old 07-26-2010, 12:45 PM
  #1
Audiworld Junior Member
Thread Starter
 
Join Date: Jun 2002
Posts: 31
Default Starting valve job/ead replacement after timing belt failure (2.8 12V)

So. I think I've got everything fixed (cooling problems, A/C, CVs, etc, etc) except for a little vibration (which I think is a bent rim.) I'm driving home on a long trip and the engine dies, at 70mph, on the expressway. I roll up a ramp, and try to start the car...nothing but grinding gear noises. I put it in gear, let off the clutch and the starter pulls me up the ramp. The starter is fine, the engine is locked up.

Push it into a gas station, and hook up the computer: 'crankshaft position sensor and camshaft position sensor incorrect correlation.' Sigh. Crack open the timing belt housing...and wow...what a mess. The timing belt tensioner pulley (that I just replaced) has blown apart and shredded the new belt. Toast.

Tow it home, pull the front end and the crankshaft moves smoothly, but one of the camshafts get's stuck 2/3 of the way around. So, I'm assuming bent valves.

So, I guess it's time to do a valve job (and possibly replace the heads, depending on what I find.) I haven't pulled a head since my old '72 Mercedes, so I've done it, but I'm rusty. I'll be following the Bentley Manual to the letter, and having the heads re-surfaced, etc, etc.

Anybody been through this one? Anyone have any tips/tricks/guidance on a smooth job?

Thanks again!
ceeanton is offline  
Reply With Quote
Old 07-27-2010, 07:31 AM
  #2
AudiWorld Member
 
Join Date: Oct 2007
Posts: 193
Default

Originally Posted by ceeanton View Post
So. I think I've got everything fixed (cooling problems, A/C, CVs, etc, etc) except for a little vibration (which I think is a bent rim.) I'm driving home on a long trip and the engine dies, at 70mph, on the expressway. I roll up a ramp, and try to start the car...nothing but grinding gear noises. I put it in gear, let off the clutch and the starter pulls me up the ramp. The starter is fine, the engine is locked up.

Push it into a gas station, and hook up the computer: 'crankshaft position sensor and camshaft position sensor incorrect correlation.' Sigh. Crack open the timing belt housing...and wow...what a mess. The timing belt tensioner pulley (that I just replaced) has blown apart and shredded the new belt. Toast.

Tow it home, pull the front end and the crankshaft moves smoothly, but one of the camshafts get's stuck 2/3 of the way around. So, I'm assuming bent valves.

So, I guess it's time to do a valve job (and possibly replace the heads, depending on what I find.) I haven't pulled a head since my old '72 Mercedes, so I've done it, but I'm rusty. I'll be following the Bentley Manual to the letter, and having the heads re-surfaced, etc, etc.

Anybody been through this one? Anyone have any tips/tricks/guidance on a smooth job?

Thanks again!

Yikes, I came close to your problem but lucky caught it before the belt exploded.

Bentley is going to be your buddy now.
I don't think there is much in the tech articles that goes this deep.
dm.A4.B5 is offline  
Reply With Quote
Old 07-27-2010, 01:41 PM
  #3
AudiWorld Member
 
Join Date: Aug 2005
Posts: 112
Default

I just had my Audi mechanic friend do this job.BIG JOB - his words not mine. I can send you a parts list that I bought if you are interested.There will be lots of them. some only OEM. My 96 A4 AFC engine code has 550,000km on it so it was an age issue, head gasket pissing oil. My email is [email protected]. I am away from home but back on the weekend. Would do it then.
Lots of other work to consider at the same time depending on mileage.
Don't make me do the parts list work unless you need it.
jimrobertson is offline  
Reply With Quote
 
 
 

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jjyerro
A4 (B5 Platform) Discussion
24
10-14-2017 08:36 AM
jared8783
A4 (B5 Platform) Discussion
15
09-09-2015 08:18 AM
DB22
A6 (C7 Platform) Discussion
11
09-02-2015 05:29 AM
aron56
Audi 100 / A6 (C4 Platform)
0
09-01-2015 12:39 AM
clancy
A4 (B5 Platform) Discussion
10
08-30-2015 01:55 PM


Thread Tools
Search this Thread
Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -8. The time now is 03:48 PM.


 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: