Wow you replaced the timing chain with out even checking stretch?

Have you rechecked the timing since you replaced the chain?

As I remember reading, there is key that is added to take up slack which must be removed after a chain replacement, the tensioner I believe is also suppose to be changed...

Tank is collapsing.....you need to fix that asap.....that will cause an issue, the tank is really easy to remove.....and blow out all the lines...

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Since we haven't got photos, I can't say what year your car is....but this link covers non turbo engines....just use 1981 as your model....engine OM617

Model 123 - OM617 Non-Turbo Maintenance Manuals

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Could've sworn I put up a photo or two, but I went back and checked, and nothing was there! Gah! I guess using the URL from an album doesn't work.. photobucket, here I come!

I hadn't checked the chain before, but I had heard that you were supposed to change them every 200,000 miles for the w123's (don't ask who, don't really remember...). The chain, and tensioner were both replaced.
I checked it this weekend (a total of about 15k miles on the chain), and I don't remember seeing any significant amount of stretch as compared to what the factory said would occur (it is a little under 2 degrees-- so like 10.75 ATDC).

For my tank, I have been using a plastic fuel cap with a hole poked in it in order to keep it from collapsing, and it has been working pretty well. I do have a proper cap waiting, I just need to get the issue solved before that goes on!

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1984 300D (Turbo)
1949 Dodge B-1-C 3/4 Ton truck
1985 Euro w123.130 300D (Naturally Aspirated)(bad transmission)

I have studied many philosophers and many cats. The wisdom of cats is infinitely superior.--Hippolyte Taine

Pictures... hopefully.









The engine compartment has since been cleaned. I'll try to get out and take a few more pictures tomorrow, and throw them up.

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1984 300D (Turbo)
1949 Dodge B-1-C 3/4 Ton truck
1985 Euro w123.130 300D (Naturally Aspirated)(bad transmission)

I have studied many philosophers and many cats. The wisdom of cats is infinitely superior.--Hippolyte Taine