Hi,

My friend showed me today his 2005 CLK 320 with 56K miles (just past the warranty of 50K) and a major coolant leak. We found nothing wrong with the hoses. The coolant just runs down from under the water pump, not dropswise but in fine thread such as water from a slightly turned-on tap.

When we tried to start the engine, the water pump starts wobbling after a minute. Am I right in my guess that the water pump is broken? If yes what repair cost is he looking at? 1K?

I suggested to replace the water pump ourselves, but he is doubtful that can be done as a DIY job.

Any comments?

Thanks!

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1996 E320 since 1/16/08, 171K miles as of Feb 2011

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1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE