Hello!

So today I've put my 300D from -77 in its winter hibernation place. Yesterday I was sitting by my computer and watching Kent talking about a good engine sound and came to think of mine. I tried comparing it today and the engine is something I've always felt I can't communicate with. The rest of the car speaks and it's somewhat easy to identify what sound is coming from where. But this car makes so many noises and I have no real clue of what is a bad sign and what is a robust old Mercedes sound. Here's a short video of me starting up my engine and some sound of it running (cold): Someone told me it's arrythmic and myself I found the knocking sounds a tad alarming. But I thought I needed to ask someone who actually knows their **** so to speak, so of course this forum came to mind

I did the valve adjustment a little over a year ago and I haven't driven much since, but I have no clue if the timing chain is worn and I thought about checking that next year. I simply want to know if I need to worry, how much I should worry and about what more specifically x)

I am no expert, but your engine sounds great. No strange sounds, nice and tight, and a great idle. As far as the timing chain, I will leave that to more experienced forum members to give you advice. Good luck with your vehicle!!

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96 E300d

That does sound pretty loud to me.

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Respectfully,
/s/
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC

[QUOTE=Maxbumpo;3736126]That does sound pretty loud to me.[/QUOTE


Yes I was wondering if it was just his recording level. The engine seems to catch clean and easy though. No rod knocks there I could hear. Idle seems high to me but again that is just perception perhaps.

I might check the injection pump timing just in case a previous owner has advanced it more than he should have.

To me at least it is hard to determine what I hear many times. At least on these posted sound bite videos. On the 616 engines I understand many have said they were quieter with good fuel supply pressure to the injection pump base.

They will run not bad with lower pressure. They just run better with normal pressure. These systems are very old and may never have been checked. I like to see the fuel pressure in the 14 to19 pound range. The service literature recommends very infrequent checks but I imagine there are lots out there that have never been checked. Proper fuel pressure also gives a little more power or at least the sensation of it.

Great replies! I shall look into the fuel pump pressure. It's something I've avoided tempering with at all, but it sounds worth checking out. I'm thankful for your answers and it makes me less worried