Date registered: Apr 2014
Vehicle: 1998 MB E300TD, 1997 MB E320
Location: LA, CA
Mentioned: 124 Post(s)
Quoted: 763 Post(s)
Yes, that sounds familiar. Lifter tick, allright. I had a C240 that was sitting for about 8 months or so, same M112 engine as yours. After I fixed the issues that prevented it from starting, when it started it made that noise.
Revving the engine to 3000 rpm for a minute or two made it so that the oil pressure went up and unblocked whatever clog that was clogging the oil feed line, and the ticking went away.
So you either have a low oil pressure(doubtful), no oil going to lifter (blocked oil passage), or damaged hydraulic lifter.
Before you do oil change, do a couple italian tune ups on that car, if possible. If you can't due to circumstances, just downshift to 2nd gear and run it for at least 15 mins or so on the freeway. 2nd gear is good until 65 mph, so.... Ideally you want to be around 4000-5500 rpm for that long.
And then change oil, see what happens.
--1998 MB E300TD 291k
--1997 MB E36 Frankenstein'd AMG 199k
--2011 Suzuki DL650 58k
--1997 MB E320 161k. SOLD...loved that stupid car.
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--1997 MB C36 AMG 273k -- stripped and junked