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M104 Engine - Head Gasket Replacement ( may be ap... [Benz DIY Project Tips]
Requested and Answered by Buckrey on 08-May-2005 03:46 (11039 reads)
M104 Engine - Head Gasket Replacement ( may be applicable to similar engine series)
This is an excellent howto from Steve Brotherton., for those DIY heavyweight.

The Mercedes-Benz 104 inline six is the final extension of an inline motor the carmaker had been building since at least the 1960s. Some of these motors were almost bulletproof, but they all seemed to have at least one shortcoming.

In recent history, the 104ís direct cousin, the single-cam 103 motor, had problems with valve guide seals and maybe even the guides themselves. But not the 104 motor. The bottom end is probably bulletproof, as I have never seen one that was worn out (although I should note that they have been out only since 1990).

The 104 motor, even with all of its mechanical excellence, does have this one nasty little aggravation: With great regularity, it acquires a significant oil leak. This leak can occur at the front of the cylinder head for at least four different reasons. In this article, Iíll examine these problem areas and also share how to correct them.

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