You have to watch out now... I used to own a 190E 1993 and got rid of it a
year ago... My situation sounds very similar to yours..
I first changed my water pump as it went kaput, then head gasket, and then
my idling speed keeps fluctuating so the mechanic got me to change the fuel
regulator and after changing the regulartor, didn't fix the idling problem
and hence my oil pressure kept going up and down while the engine is hot,
but fine when start from cold... and then my cam shaft broke due to faulty
install after head gasket fix (LONG STORY)...
After over $6000 of work over a period of 4 short months, I've decided to
get rid of the lemon. Watch out.. it just seems like the same problem.
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