I have an 86 190D with 147000 miles. I have had several different opinions regarding changing the timing chain. Some say change it now and others say it should easily go 250000. The car has had regular servicing and has not been driven hard. Your opinion is appreciated.
see if the play in the chain is more than about 16 degrees (what a gas engine would have) turn the crank in one direction, then mark on the pulley somewhere you can see, then start rotating it slowly in the other direction, just until it engages the upper camshaft, it will turn easy at first, then get HARDER to turn, then stop, and see how far the mark you made on the crank moved. might want to try this a few times if you are not very adept mechanically. it's not a foolproof procedure but will give you an idea of the amount of slap in the chain. good luck with it!
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