My car has 173,000 miles, I dont think the timing chain has been replaced yet. Have any of you dont this yourself? I am an average DIYer with average tools. I do not have my CD yet, is this best left to a prof? The car runs great right now and I want to keep it that way.

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1996 E320
2000 C230 Kompressor
1988 190e 2.3 - 225K miles, owned for 7 years. I cannot say enough good things about this car. Very well built, even at 225 it ran like new.

You can check the stretch of the chain to see if it needs to be replaced. I think 3 degrees stretch is max?

If you have close to 200K, I would change it now, why take the chance..

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2000 Ford 7.3 Powerstroke 4x4
2006 Mazda Tribute
1983 Black 300 D (donated to charity)
1993 Teal 300 D (160K) Sold
"I love the smell of burnt diesel fuel in the morning, it smells like ....VICTORY"

Semper Fidelis
USMC 1973-1976