I went over to check this vehicle in person.

Compression test:
#1. 150
#2. 150
#3. 150
#4. 170
#5. 180
#6. 185

Weak yellow intermittent spark, roughly every 15 - 30 crank shaft revolutions.


Note:
Look at this link for the broken resistor.

PART NUMBER SEARCH RESULTS WITH PRICES
Vehicle 1992 Mercedes Benz 190E 2.6
Part: Aux. Fan Resistor
Note: Auxiliary Fan
.2 OHM : Black bracket
Chassis: F000000-F637529
G5040-51923 Aux. Fan Resistor Beru IN STOCK

Not sure how to include this quote from Roy,
but I must thank him for his help!

Thank you Roy!

Marsden