Replacement: Spark Plugs – Mercedes W203. Professionals Recommend:
- The replacement procedure is the same for all spark plugs.
- Warning! Stop the engine before starting any work – Mercedes W203.
Perform the replacement in the following order:
-
Step 1Open the hood. -
Step 2Use a fender protection cover to avoid damaging the car’s paint and plastic parts. -
Step 3Unscrew the engine cover screws (3 pieces). Use HEX No. HW5. -
Step 4Remove the engine cover. -
Step 5Unscrew the ignition coil fasteners. Use a #E8 drive socket. -
Step 6Remove the ignition coils from the spark plug wells.Replacement: Spark Plugs – Mercedes W203. AUTODOC Tip:Remember the sequence of steps for disassembling the ignition coil. -
Step 7Clean dirt, dust, and debris from inside the spark plug wells. -
Step 8Unscrew the spark plugs. Use spark plug socket No. 16. Use a ratchet wrench. -
Step 9Remove the spark plugs. -
Step 10Apply a thin layer of a special high-temperature anti-seize lubricant to the threads of the new spark plugs. Treat the surface of the terminals of the new spark plugs. Use an electronic spray. -
How to Change the Serpentine Belt on a MERCEDES-BENZ W203 C-Class
Replacement: serpentine belt – Mercedes W203. Expert recommendations:- All work must be performed with the engine turned off.
Perform the replacement in the following order:-
Step 1Open the hood. -
Step 2Use a fender protection cover to avoid damaging the car’s paint and plastic parts. -
Step 3Remove the engine cover.AUTODOC recommends:Replacement: serpentine belt – Mercedes W203. Do not use excessive force when removing the part as it could damage it. -
Step 4Remove the air intake hoses. -
Step 5Move the V-belt tensioner pulley aside. Use a 16 mm combination wrench. -
Step 6Remove the V-ribbed belt.Replacement: serpentine belt – Mercedes W203. AUTODOC recommends:Check the condition of the tensioner pulley and the idler pulley. Replace them if necessary. -
Step 7Return the tensioner pulley to its initial position.Step 8Install the V-ribbed belt.Replacement: serpentine belt – Mercedes W203. AUTODOC tip:Make sure the V-belt fits perfectly on all pulleys. -
Step 9Move the V-belt tensioner pulley aside. Use a 16 mm combination wrench. -
Step 10Place the V-belt on the tensioner pulley. -
Step 11Return the tensioner pulley to its initial position. Use a 16 mm combination wrench.