Where do you find the spark plugs on a 1995 Mercedes C280-6 cylinder?
Under the inspection panel on the top shield of the engine, held in place by 3 weird toped screws. Plugs in the holes at end of plug wires. Three spark plug wires are visible. The other three plugs are located under the coils. wiggle gently and lift straight up. Use compressed air and blow out the spark plug hole after loosining the plug so as not to contaminate the cylinder.
Can Spark Plug Removal Crack a Cylinder? No, spark plugs screw into a threaded hole in the cylinder "heads," and therefore cannot crack a cylinder [wall around the pistons]. NOTE however, that if spark plugs are not removed and reinstalled PROPERLY, this process can "strip" and ruin the threads in the cylinder "HEAD."