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Mercedes-Benz M119 500SL heavy engine knock repair
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- เผยแพร่เมื่อ 8 มี.ค. 2023
- A broken timing chain rail may be the cause for your loud engine knock and though not a simple repair, it's better than having to replace the engine.
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It’s really only the upper rails that ever need to be replaced, and obviously these engines are 30+ years old now.. You really can’t complain. The M117 and M113 engines were very good, but the M119 still holds its place as the very BEST. They are exceptionally robust and reliable, and still considered powerful & fairly modern by today’s standards.
The best? Sorry but anyone that has been around everything MB has to offer would not likely choose the M119. Personally I would easily choose the M103 or M112/M113 over the M119 and the R129 with the M113/722.6 combination ran just as quick as the old combo. Cool engines but not our most dependable or trouble free. We did plenty of warranty work on them back when they were new. Thanks for commenting
@@bicylindrico It’s not an easy comparison in that regard, because those are simpler engine designs, with fewer valves, fewer camshafts, no VVT, etc. The distributor ignition was probably the only real “trouble” that they were known for, and was usually because of bad insulator/insulator o-rings which seal the distributor cap from moisture and contaminants.. which MANY people, dealerships and shops have often overlooked. So of course the M119 will be slightly more work to maintain/repair and probably more expensive in the long run.. but I feel that they are mechanically more robust, durable and perform better at their limits than any of the successors.
@@charlesphiliparthurgeorgep4653 I am with you my friend. Mechanically they are, like you say, "robust" and very much different than modern designs and even over-built in many ways. Also maybe the last of the 'spare no expense' type engine engineering that we all love with the older MB products in which they did things not because they were cheaper, but because it was a higher quality product in the end. I do appreciate what you are saying and agree with you in most regards. I own one too and have no plans to replace it.
I own, and have seen/heard about hundreds of examples of both engines.. including testimonies from Mercedes master technicians. The amount of maintenance an engine requires over a period of time, doesn’t equate to it being better or worse than another engine. The M119 doesn’t really have any real flaws that aren’t minor and easily corrected.. such as the cam oiler tubes on the later engines, and wiring harnesses in the early engines. The finicky ignition systems on the early ones might be the one “weakness,” but really isn’t that bad. The M119 makes more power with less displacement, and is a smoother/more refined engine. It will obviously outperform the M113 higher in the rev range as well.
The M113 on the other hand, has become commonly known to have oil consumption and valve stem seal issues. Those are NOT related to maintenance, they are related to design. Still a great engine, but not an EXCELLENT engine. The M119 had no such issues.
It’s common sense that an engine with 4 valve, DOHC technology equipped with VVT, is going to be slightly more complex than the simpler and more primitive 3 valve SOHC design. I respect your theory, but it’s a bit like saying: the Toyota Camry is a better car than the Mercedes S Class, because the Camry doesn’t have air suspension that will eventually require maintenance and cost money. There is always a compromise.
Thanks for this helpful video but I have a question how did you boroscope this sprocket with the timing chain in position I tried to do it and i couldn't where exactly did you insert the boroscope in order to see this sprocket
My scope is only about 3/16" wide. I could see the plastic wedged into the sprocket just before the chained rolled over it so I was on top of the chain. I don't recall where exactly I snuck it in.
@@bicylindrico ignorant question, how do I “ turn the engine “ and where should I place the pieces of wood ?
I like the content I just subscribed. I have a m273 2009 e550 4matic and wanted to know if you know of any upgrades that can be done power wise. I also wanted to know if the m156 or m113 suoercharged would work with that transmission or would any other trans/engine setup be swapable? Thanks man would gladly bring it
Sorry, I don't. The newer stuff is not very hotrodding friendly unless it involves a software tune. Those engines make plenty of power on their own but kind of lack any real personality. They are great cars though!
Do u have fb or ig
@bicylindrico. no FB