I've had this problem of poor acceleration for some time but it seems to be getting worse. The car has 185,000 miles and is in otherwise very good condition. I've had the valves adjusted and the fuel pump adjusted. I have also replaced all the filters. Nothing has helped. My mechanic said he needs to check the compression. I've heard that sometimes the fuel pump goes on these cars. The car really can't get moving until the turbo kicks in in. It runs ok on the highway. I have been using Red Line Diesel Fuel Additive. Are there any things that I should be looking at?

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Ed
1985 300D w/ 196,000 miles