B6 S4 Engine Problem!! HELP NEEDED - Page 3 - AudiForums.com


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  #21  
Old 05-13-2009, 02:48 PM
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  #22  
Old 05-13-2009, 03:16 PM
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My brother has an 04 s4 with the 4.2. He had the exact same problem with starting. We changed the starter and everything was fine. Thats what it sounds like to me. If you want to avoid replacing the starter you can first try cleaning the contacts and wire connectors on the starter solenoid. That may fix your problem but if it doesnt your probably gonna be into it for a new starter.
one other failure could be a loose connection on your battery. I believe its called terminal 30 and but vagcom would point you in that direction.
All of this is contingent on the car not "cranking" and doing so intermittently. If it cranks every time but does not "turn over" then your problem lies elsewhere.
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Old 05-13-2009, 03:27 PM
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If your not concerned with the money then by all means let your mechanic throw parts at it....but it doesnt sound like he's properly diagnosing your car.
If your timing chain is loose and skipped time, then more often then not, its going to cause piston and valve collision. A simple measure would be to have your mechanic check all timing marks. On the 4.2 this is no simple process either but it can be done. the cam sprockets are factory installed on "beveled" tapering. This means that there is no key way to ensure that the sprockets cant slip. Audi has had issues with this and the only preventitive measure, is to assure proper torque and even then people experience unwanted rotating (miss alignment) on the cam sprockets.
This is where my brother lost time and compression. He wasnt so lucky, as the time slipped enough to cause interferience and we had to replace valves. While we were at it the chain/s and all tensioners were replaced.
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Old 05-13-2009, 03:42 PM
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As a X recovering mechanic i can tell you one thing (or a couple for that matter). This mechanic is going to remove your motor to replace rings. Only to find out that, timing or a variety of other causes are the "real" problem. Your gonna get charged for the ring job. Then he's gonna tell you "oh by the way, you also need this" Hopefully he finds the other problem before re-installing the motor.
If you have bad rings at 40k WITHOUT kicking the sh..t out of your motor and NEVER changing the oil....i'll eat my hat.
Is it possible? I guess, but Either way if you did have bad rings, your thread would have been started like this
HELP! MY EXHAUST IS SMOKING LIKE CRAZY.

remember what i said: 1) Bad rings = blow by 2) blow by means = burning oil 3) burning oil = smoke out of your exhaust......Lots of it!

Last edited by pepsicolla; 05-13-2009 at 06:48 PM.
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Old 05-13-2009, 05:53 PM
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^^^^word
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Old 05-13-2009, 09:10 PM
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The comments about the rattle at start-up, mine does the same thing but I was advised by my Audi dealer that is normal for the S4 as it takes a second or two for the oil to circulate at start-up.
The delay in starting, mine does the same thing but only when cold (-30c), everything lights up but nothing for a few minutes then it starts.
The horse power thing, i would think that 304 at the wheels is pretty close to 340 at the brochure or crank. I don't think the horsepower in the brochure is at the wheels and there is loss through the drive train.
I see all your comments about oil use and rings, My car uses a lot of oil, on a long trip the back of the car was black with oil. It does not visibly smoke however. I don't want my Audi dealer to re-ring my car and give it a good honing (as they suggested) without first checking some other items. I am really at a loss for the car it's got 91k now and worse than ever, it is slow, I got lit up by a BMW335XI. I am not trying to hijack your thread but seeing if any of you guys have insight to the same problems I have and how to get Audi to help me. Audi knows this car has a problem. I was seriously told that the bulleting for PCV valve did fix the problem on some of the S4's because of crankcase presurization issues.
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Old 05-13-2009, 09:29 PM
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Quote:
Originally Posted by Homeychan View Post
I see all your comments about oil use and rings, My car uses a lot of oil, on a long trip the back of the car was black with oil. It does not visibly smoke however. I don't want my Audi dealer to re-ring my car and give it a good honing (as they suggested) without first checking some other items.

Even with 91k your still more apt to have valve seal issues then ring problems. Remember, these cars while often times....troublesome, Your pistons, rings, crank, and block are very, very reliable. If your car is smoking i would first suspect valve seals.

The OP should also look into this, as its more likely the cause for oil consumption then rings. However, at 40k its still unlikely, but iv'e seen stranger.
In either case your going to experience smoke and odor.

Turbo s2k and Homey, feel free to email me at [email protected]. I'd be happy to give you my phone number and give you some pointers. To many people get raked by their mechanic. Im no expert but i'll help where i can.
Theres only so much that can be determined via text.

Last edited by pepsicolla; 05-13-2009 at 10:41 PM.
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  #28  
Old 05-28-2009, 01:39 AM
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Hey Guys to try and keep some attention on this issue I started a blog with my service records, contact with Audi and pictures, please have a look and if you have the same problems email me, maybe we can force Audi to fix our vehicles.

My blog is here:
http://audiwarranty.blogspot.com/
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42, audi, b6, chain, exhaust, issue, loss, pcv, power, problems, s4, safety, smoke, timing, turn

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