How do you check a Mercedes ignition coil?

Normally,coils are checked using a calibrated ignition spark tester (which flashes) which is connected in line between the coil and the plug,after removing a fuse to disable the fuel pump. If you know which cylinders are mis -firing,try swapping the positions of the coils and see if the fault follows the coil.

What indicates a dead ignition coil?

One of the most common symptoms associated with a faulty ignition coil is engine performance issues. Faulty coils may cause the vehicle to experience misfires, a rough idle, a loss in power and acceleration, and a reduction in gas mileage. In some cases the performance issues may even result in the vehicle stalling.

How long do ignition coils last Mercedes?

around 100,000 miles
The ignition coil on your car is supposed to last around 100,000 miles or more. There are a number of factors that can lead to this part become damaged prematurely.

What causes ignition coils to go bad?

Ignition coils tend to fail because of bad spark plugs or plug wires. Additionally, engine heat and vibrations can cause damage to ignition coils. Nevertheless, on most vehicles can go 80,000 to 100,000 miles before requiring an ignition coil replacement.

What causes Mercedes Benz to misfire?

Misfires can be caused by not enough fuel entering into the cylinder. When there isn’t enough fuel-to-air ratio, this leads to an oxygen-heavy explosion. On rare occasions, it is also possible that you have bad gas in your Mercedes. There are several parts that regulate the amount of fuel that enters the cylinder.

Can I replace ignition coil myself?

You may see the ‘Service Engine’ light come on and the car might stall or not start at all. You can replace a failing ignition coil fairly easily at home, but remember that you’re dealing with high voltages so must disconnect your battery before you start.