Quote:
Originally Posted by Zulfiqar
My M112 makes a noise on startup that I can only describe as chain/lifter noise, It was very loud when I bought it, on the first oil change I discovered a paper filter which was about 2 inches short of hitting the cap top hence 2 inches of the central tube was visible and hence unfiltered oil was passing.
After the oil change with new fleece filter and Delo 400LE and after 6500 miles driving it has quietened down a lot, but I do hear a deep soft thumping from the engine at idle - dealer and indy both have no answer to that. The engine pulls hard and sounds fantastic at speed after new spark plugs (old ones were factory items at 157,000 miles)
I leave it be as the nature of the car, same with the new 3.5 engines toyota are using in the camrys, siennas, ES350 etc. They are like a silverware drawer on startup.
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I also had an M112 (2001 E320) that I had since gotten rid of. That was a good car mechanically, just the body didn't hold up to the NY winters. That engine ran strong, consumed a lot of oil, but was generally quiet. The only noises that engine made were timing chain noises (whoosh.......whoosh......). Apparently that was quite common on those. But it had no valve tappet noises (sometimes early morning starts for a few seconds), and definitely no lower end rumble. My buddy still has his 2000 E320 4M with 200K on it and that engine, other than the TC noises, sounds great. I agree, all the new direct injected engines are noisier than what we are (were) currently used to.