I'd like to test the knowledge of some of the people here.

Question I

You have a 1993 500E (124036 M119 engine) that has erratic idle jumps up and down and is worse in gear.

Question II

You have a 1993 320E (124032 M104 engine) that has oil residue in the cooling water. Witch part of the head gasket is most likely broken??

Question III

You have a 1993 320E (124032 M104 engine) You have just replaced your head gasket and the engine is not running on all six cylinders. What are the two most likely causes???

I have fixed all these problems and will give hints if asked for.

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600SEL '91
300E 4Matic '88
240D '83
280SE '77
350SE '73
The most complex systems can fail in the simplest way.
Contra verbosus noli contendere verbis, sermo datur cunctis, animi sapientia paucis.

i don't believe in the lord! He's never bought me a Mercedes Benz.