BenzWorld Junior Member
Date registered: Nov 2009
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I had a similar problem, the engine would tick after it sat for a while, being the engine did not have a whole lot of miles I really didn't even consider the lash adjusters ("lifters" to some of you), I am a maintenance freak and change the oil every 3000 miles regardless of MB's recommendation.
While changing the oil I noticed it was taking a very long time for the oil to drain (Yea, I do it the good ole fashioned way and actually drain it!), so being the oil pan is very easy to remove I decided to remove it and have a look, I was SHOCKED to see SLUDGE come out, and not just a little, I'd say about 2.5 gallons of it. You can imagine, I was sick to my stomach and just decided to clean it out best I could, so I scooped, wiped, and brake cleaned for 2 days and let it drip for another day, afterwards I refilled it and installed a new oil filter (which was also previously clogged with sludge also) and ran the car for about 30 minutes and drained it and refilled it and replaced the filter once more.
That was probably 20 thousand miles ago and the engine is as quiet as a new one and I have never heard a tic again.
MB dealers use suction via the dipstick tube to remove your engine oil, logically I don't think this is the best method and believe this may have contributed to the sludge.