1999 SL500 Engine Problems? - Mercedes-Benz Forum
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#1 (permalink) Old 12-02-2009, 03:58 PM
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1999 SL500 Engine Problems?

I have a 1999 SL500 that I bought from my father who bought the car brand new. The car has only 18,000 pampered miles on it. My father always had the oil changed every 6 months at the mercedes dealer. I took the car in to have a new soft top put on it because the old one had the windows yellowing. I received a call from the repair shop telling me that they noticed a noise coming from the engine. Originally he thought it was coming from the bottom of the engine, but they pulled the pan and there were no metal shavings and everything looked fine. Then he said they manually turned the pistons and noticed some slight resistance from one of the pistons so he thought it was a valve problem. Now he says that the timing belt has slipped and that is what is causing the noise, he also said he pulled all the plugs and plug #8 and #4 has burned oil on it. He said that Mercedes has a known problem with their aluminum engines and the sidewalls of the piston cylinders. Has anyone else out there had any similar problems or is this guy just trying to get me. I don't know him, but he was the only guy in the area that could replace the top. Please help because I don't know whether to trust him or not.
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#2 (permalink) Old 12-02-2009, 04:02 PM
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just to confirm, you took it to the same dealer or a private shop?

i hope the top needed replacing instead of just yellow windows.

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#3 (permalink) Old 12-02-2009, 04:07 PM
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I took it to a private shop because they were the only ones interested in replacing the top
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#4 (permalink) Old 12-02-2009, 04:22 PM
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you do realise you could have cleaned those yellowed windows back to clear with a few bucks worth of product.......are you sure the shop didnt just clean it in half an hour and charge you a few grand for a new top....
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#5 (permalink) Old 12-02-2009, 04:30 PM
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Yes, they did replace it because it had some other problems than just the yellowing windows.
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#6 (permalink) Old 12-02-2009, 04:38 PM
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Ummmm....

GTFO out of that shop ASAP. They're either complete idiots, or they're trying to scam you, or probably some combination of both. Your car doesn't even have a "timing belt", it has a chain and it's impossible that it could have jumped timing, as there's zero stretch with 18k miles on it. Go pick it up NOW. If it doesn't run have it towed somewhere else to get the work finished. Sounds like these guys are bad news.

Also, there's no way the top needed replacing with 18k on the clock. You could have just replaced the back portion. I personally don't like cleaning the windows, because that gets you into these ever-shortening cycles of having to clean them and clean them. Once you abrade the plastic surface, they seem to get cloudy faster and faster each time. But with that kind of mileage, I'd probably have given it a shot.

You're getting ripped a new one, man.

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#7 (permalink) Old 12-02-2009, 04:38 PM
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Quote:
Originally Posted by Greg 560 View Post
Yes, they did replace it because it had some other problems than just the yellowing windows.
What else was wrong with the top?

"Veni, Vidi, volo in domum redire." (I came, I saw, I want to go home.)
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#8 (permalink) Old 12-02-2009, 04:39 PM
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sorry, my bad it does have a timing chain not belt, my typo.
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#9 (permalink) Old 12-02-2009, 04:42 PM
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Quote:
Originally Posted by Greg 560 View Post
sorry, my bad it does have a timing chain not belt, my typo.
Yeah, but it's not just a "typo". Timing chains don't "slip", they usually won't jump timing even if they're way stretched and the tensioner and guides are worn out. About the only way you can lose a motor with a chain this way is if it breaks. But nothing's wrong with the chain, guide, or tensioners at 18k miles anyways, that's hogwash. I'm telling you, this mechanic is taking you for a ride. Go get the car, and you may as well go ahead and start fighting now over the no-doubt ridiculous bill coming down the pipeline, to save yourself time later.

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#10 (permalink) Old 12-02-2009, 04:42 PM
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the top had some small snags in it and stains. The car came from arizona and I don't know if it was the heat or what, but the top was extremely dirty and I tried to clean it to no avail.
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