Wrapping up year 4
If it is the ballast that's going to suck as I believe I read that you must break the motor that moves the lights (they are adaptive) to get the ballast out. So basically you'd have to buy an entire unit.
Alas this isn't a 2IS forum. lol

The Best of Mercedes & AMG

Which is basically the same price, considering that parts run around $300? (chain, tensioner, gasket kit)
I am thinking about getting a quote from a 'family owned' auto shop. If people on this forum are able to replace the chain in 3-4 hours, then I guess any mechanic can.
$52 for the chain
$77 for the tensioner
$25ish for the gaskets
At the time I purchased it.
I have consulted with both my indy mechanics. One said 4hr @ $65/hr, the other said 4.5hr @ $72/hr. Whoever can get to it first is getting the business. That's $260-325 to replace all. But to be fair, I have very cheap labor rates at my mechanics.
Autohaus and parts-com have higher prices.
Well, I kinda was expecting around $600 parts+labor, but not $1k

I guess even the stealer would charge around $1.5k
BTW, did you find a cover for timing chain tensioner online?
Last edited by VVF; Jul 30, 2012 at 02:30 PM. Reason: tensioner cover
What is this about a tensioner cover, though?
The cover: https://mbworld.org/forums/5132709-post149.html
Hogger has a plug, somebody else - I believe in the same thread - had some kind of glued-in thing...
He then asked if I had not purchased guides. I didn't think about this. I bought these parts when the car was silent on start. Does the noise mean the guides are ruined? He said he would look at them tomorrow when he takes the stuff apart.
Neither of my two independent mechanics will touch the timing chain. The primary one said no to start with, but that was no surprise since he's the guy I use for suspension and brakes and things like that. The secondary one is an engine guy and he will not do it, either. He is convinced after his research that the car does not have a problem and made a series of excuses before finally saying he just wasn't going to do it. He said the decision is based on him not understanding the WIS procedure about fishing in a new chain. Whether that's true or not, I don't know. He can rebuild an engine, I've seen him do it, not sure why this is such a challenge.
In any event, the plan now is to drop it off at a specialty shop called European Sports Car in my area. I have heard nothing but good things about the shop and they even have a STAR computer. The owner initially told me that the timing chain issue only happened on neglected cars that didn't use the proper oil or ran low on oil at times and how he would likely need to replace the oil pump. I contacted him a second time and he has agreed to replace the chain and tensioner next week. The cost will be higher at about $500.00 but the alternative is a dealer - the dealer I called said the same thing, M271s don't have timing chain issues, no service needed. The price they gave was over $1k, but they were clearly not interested in it.
A new car might be in my near future.
Last edited by LILBENZ230; Aug 2, 2012 at 01:54 PM.

We've said many times on the forum that we tend to hear a lot more problems than is representative. The stealer is right in theory - you are NOT supposed to have to do this. I don't claim to know the truth. I don't know - or remember - the service history of the cars that have had this problem but I'd tend to put my trust in what Glyn says. He's seen a lot more of this than we have and he doesn't have a reason to sugar coat anything (like a stealer would).
It sure would be interesting to get some real statistics on this.

I do think some of the problem revolves around how the vehicle has been maintained but there is no doubt that mileage also plays a role. If it rattles at start fix it ~ don't wait for trouble.
As of right now I still have a gameplan.





