If you are car enthusiast, you might know what this part is responsible for; if not, let us give a little information on what the part does, whom it affects, symptoms of failure, and how to fix it. The balance shaft and counter weight are specific to engine designation. They are fast, durable, and efficient, making them a commodity in the auto industry. Some issues are model-specific and occur only in certain Mercedes engines. Mine is a 2006 C230 Sport with 108K. So yeah not going to be one of those idiots having to bring a jacked up non running car to the pros to fix. This means the engine can function sub optimally for quite a while without an error being reported to the computer and the check engine light not being illuminated.
The balance shaft in the early Mercedes-Benz M272 V6 engines was known to have problems due to soft metal being used in the manufacturing process of the timing gear. Soon I'm going to pay to get a CarFax on it, unless anybody has a better place. Check engine light just came on and from what I have found it can go from simply replacing the camshaft sensor to replacing the balance shaft, and I'm kinda freaking out. If you show P0016 and P0017 you have the problem. Worn out balance shaft gears can cause significant damage to other engine parts; therefore, addressing the issue sooner rather than later can substantially reduce repair costs.
Unfortunately, the gear itself is not a replaceable item. The M272 and M273 engine introduced in 2006 have had problems with the timing resulting from a worn balance shaft sprocket M272 or timing chain idler gear on the M273. Has the vehicle ever been in any accidents? That's why I got my 272 outside of the balance shaft range. Installing the Allen nut while compressing the spring is most easily done with an air ratchet, if you use air tools to start the job make sure to finish with a torque wrench. The cat is out of the bag and people know to avoid these cars. These symptoms are concerning for Mercedes drivers, as well they should be. Engines with these bearings produce a sort of Donk Donk noise for a few seconds after cold start up.
As the problem gets worse the chain tensioner will no longer be able to compensate for the slack and a chain rattle will develop in the engine. When I was shopping for a w211 wagon I tried to avoid the m272 like the plague because of these very issues. And that was just the engine. Failure to observe that, will result in the over tightening the timing chain which will ultimately lead to engine head damage. If this issue is not fixed, it can lead to costly engine damage if the timing chain jumps. Above all else, it is critical to have the problem assessed by a to be sure symptoms are not due to another engine problem. Mercedes Badge Image credit goes to:.
Do you know if that's true, or if I take the car in today and have the balance shaft issue, will they cover it for free? The material for the balance shaft sprocket and the timing chain guide wheel idler was modified on engines past the serial numbers listed above. These M272 engines are problematic. Has the vehicle ever had paint work performed? Jim: Pull the stored codes. Only original content is acceptable. Some of the signs of early deterioration of the part include: rough idling and rough running including engine stalling and engine misfiring; intensified rattling noises with increased acceleration; and the illumination of the check engine light. I'm looking at a 2006 C230 with the M272 engine with 170,000 miles on it and I've heard this engine has a problem with the balance shaft gears. Refer to Figure 4 for example of a new gear for comparison.
If you guessed Balance Shaft Failure, you win! Make Model Submodel Engine Year Chasis Mercedes Benz C350 4Matic V6 3. I'm guessing the fix was good? And the engine should not run rough. Could I assume that if it hasn't failed by now it's not going to, or already been fixed. Noted the timing chain tensioner is a single use part. It is a good thing I Love working on cars! If it's an older engine from the 1970s or 1980s or has a single roller chain it may be needed. In my opinion these engines are over complicated junk. What happens is the timing chain wears the softer metal on the sprocket down and in turn slack is developed in the chain.
If it's rough, there's a problem. This is a problem that will start to affect more of these engines as they age. Above all else, it is critical to have the problem assessed by a professional to be sure symptoms are not due to another engine problem. Recommend you find a better car to buy. The intake linkage is also another common failure. If you have concerns about the cost of the repair, it would be in your best interest to contact the manufacturer to find out more information.
. Repair is engine out, sump off and replace with better tolerance units. Install the tensioner with the 27mm nut with the Allen nut not installed yet, torque in place. One issue that is commonly seen in repair shops is a faulty balance shaft gear. For a 5K car this makes no financial sense. Another one will come up that fits the bill and has had the repair done. Pull the pin out fully, it only goes one way.