Valve stem seals may wear and cause the engine to burn oil. this can contaminate the catalytic converter and cause it to fail.
Resources for the Repair and Maintenance of your 1990 Mercedes-Benz 560SEC
1990 Mercedes-Benz 560SEC
1990 Mercedes-Benz 560SEC Problems
The fuel pump and/or fuel pump relay can fail, causing the car to crank over but not start. Proper diagnoses will be necessary to confirm if the pump or relay is at fault.
A rough running motor or lack of power can be caused by a failed distributor cap or rotor, ignition wires (or their resistors), or valve cover gasket leaks. If the valve cover gasket leaks, oil can pool where the ignition wire resistor connects to the spark plug. The resistor can fail and the spark plug may not fire because of a short circuit through the oil.
Power steering hoses and components can develop leaks.
The timing chain and timing chain guides wear; they should be replaced every 100,000 miles.
1990 Mercedes-Benz 560SEC Questions and Answers
what type of oil and power stearing fluid do i need for 1989 560 sec.
560 sec when i start it up it runs at a very high speed and the abs light comes on at the same time when it decides to idle down the abs light will go off too i dont understand what the brake syste...
No blower operation at any speed, blower motor is good. I need to locate the blower control module to test it and its wiring. Where is it located?
My car is a 1987 560 sec mercedes benz and I can't get the idle fuse out to change it . My car idles really fast and I was told to change the fuse . I can't get the fuse housing for the f...
Where on the engine is the fuel filter located, and, is it easy to change