Where are the spark plugs on a Mercedes Benz?
Where are the spark plugs on a Mercedes Benz?
Half of the plugs are a coil-on-plug ignition system. All this means for the home mechanic is that the coil must be removed in order to access the spark plugs, rather than a cable running between the coil and the plugs.
How do you replace coil on Mercedes W124?
Pull the spark plug connectors up by the hard plastic part (red arrow). Never pull the connector up from the wires. You can pull the connector for the coil over plugs up by the coil itself (red arrow). The wires, coils and harness all disconnect from each other for replacement. Use a 5/8th-inch thin walled spark plug socket and remove the plugs.
Can you change spark plugs on Mercedes M104?
In the case of the M104 engine, however, it’s quite easy to change the spark plugs. On the M104 engine, Mercedes has eliminated the use of a distributor by integrating a wasted spark ignition setup with three coils.
How often should you change your spark plugs on a Mercedes Benz?
Mercedes-Benz recommends replacing the spark plugs on W124 models every 30,000 miles and I suggest replacing your spark plugs every three years regardless of mileage.
How many spark plugs are in a Mercedes Benz W211?
W211 models with a 6-cylinder engine utilize one ignition coil per cylinder (green arrows). Each ignition coil (green arrow) has two ignition wires running to spark plugs (red arrows). Using spark plug wire pliers, remove the spark plug wires from the spark plugs.
How does a Mercedes Benz W211 ignition coil work?
The cover is held on by four metal clips that grab onto rubber mounts, with the front two shown (red arrows). The rear of the cover has two as well. Once detached, remove the engine cover / air filter housing from the engine. W211 models with a 6-cylinder engine utilize one ignition coil per cylinder (green arrows).
Do you need to replace spark plugs on Mercedes?
If you replaced all the spark plugs but are still getting an engine miss fire code, then the next item to check are the ignition coils. Mercedes uses one coil per cylinder. In some cases, each coil may power two spark plugs. Ignition coils are easy to replace, and you don’t necessarily need to replace all of the ignition coils if one has failed.
Why does my Mercedes engine misfire when I change the spark plug?
Keep this in mind especially if you change the spark plugs in your Mercedes and you are still getting an engine misfire. Fuel pressure can cause engine misfire as well.
