1994 Mercedes Benz 320

I WAS CHANGING SPARK PLUGS AND SAW THE BAD WIRES IN THE HARNESS. I TAPED UP WHERE I COULD BUT WHEN I TOUCHED THE WIRE THE INSULATION JUST FELL OFF THE WIRES. I WAS ABLE TO GET CAR RUNNING FOR AWHILE BUT NOW IT RUNS BAD. I AM IN THE PROCESS OF TRYING TO REPLACE HARNESS AT THIS TIME. THIS IS CLEARLY A MFG. DEFECT AND A POTENTIALLY DANGEROUS ONE. *TR

A YEAR OR TWO AFTER THE VEHICLE WAS PURCHASED(MAY, 1995) I OBSERVED AN OIL LEAK. I BROUGHT THIS TO THE ATTENTION OF THE DEALER BACK THEN, AND WAS TOLD ESSENTIALLY THAT ALL CARS LEAK OIL AND THAT THIS LEAK WAS MINOR. OVER THE YEARS IT HAS BEEN GETTING MORE PRONOUNCED, NOW LEAKING ON THE EXHAUST CAUSING SMOKE. RECENTLY I STOPPED GOING TO THE DEALER FOR SERVICE, NOW TO AN INDEPENDENT MERCEDES SPECIALIST. THEY TELL ME THAT THIS OIL LEAK IS FROM THE HEADGASKET, A VERY COMMON PROBLEM ON THE W124 CHASSIS (E320 MODEL). FURTHER INVESTIGATION ON MY PART REVEALS THIS PROBLEM TO BE A COMMONLY REPORTED ISSUE, AND WAS FIXED ON THE NEXT MODEL BY BOLSTERING THE HEADGASKET IN A CERTAIN AREA. IN REPAIRING THE HEADGASKET THE CYLINDER HEAD HAS TO BE REMOVED AND THE ENGINE HARNESS DISCONNECTED. TO MAKE MATTERS WORSE THE INSULATION ON THE ENGINE HARNESS IS ALREADY CRACKING AND FALLING OFF, EXPOSING THE METAL WIRES. THE ENGINE HARNESS WILL BE COMPLETELY DESTROYED WHEN IT IS MANIPULATED TO DISCONNECT IT. I ALSO IDENTIFIED FROM MY RESEARCH THAT THE INSULATION ON THE ENGINE HARNESS WAS MADE FROM BIODEGRADABLE MATERIALS, NOW HOW SMART WAS THAT? NOW I'LL HAVE A $4-5000 REPAIR BILL ON TWO COMMON PROBLEMS WHICH MERCEDES DENIES EVEN EXISTS ON THIS MODEL CAR. IF I DON'T FIX IT, THEN I RUN THE RISK OF ELECTRICAL FIRE FROM THE HARNESS, AND THE RISK OF ENGINE FIRE FROM THE HEADGASKET LEAK, OR SOME CATROSTROPIC COMBINATION OF BOTH. THE ENGINE HARNESS WAS ALSO REPLACED ONCE IN 1998, AFTER IT FAILED ON A 500 MILE ROUND TRIP. *TR