nick280c

like it says I just bought a 94 C280 with 85K miles a couple weeks ago I thought I would detail the motor to make look nice and ever since then my car jerks when I'm stopped with it in drive. especially if you let the brake off to coast at 2-5mph. it really jerks, It feels like a cylinder isn't hitting or something, so I checked for water in the spark plugs that could of leaked in, and sure enough #4 I think, had about a inch of water in it, so I dried it out good. Though 100% I fixed the problem but nope it still is doing it, so I took it apart again and took out the plug but it looked fine, I have no clue what the problem is and I hate to take it to the $tealership if I don't have to????? Please help

040mercedes

Don't feel bad. When I was at the stealership, I was standing in line to talk to the service writer and overheard a phone converstation with a customer who did the same thing. It was some detail shop that did it. They had water in the spark plug too. I'm not exactly sure how to fix it, but I think I overheard something about getting new plugs. If not, you can call the service department and they should know what to do. It shouldn't cost you anything to call, though it is mercedes, they'll try to get you to come down so they can "have a look at it".

DougandhisC280

I posted that same post about a year ago. I never thought it would cost me 400 dollars to have a clean engine. I ended up shorting out my air mass meter.