Quick Answer: What makes a lawn mower coil go bad?

What causes ignition coils to keep going bad?

The leading cause of premature failure of an ignition coil is due to a worn or bad spark plug ignition cable. A bad spark plug ignition cable will have a much higher than normal resistance. … This excessive voltage creates a high amount of heat which consequently melts the coil’s wire insulation.

How do I know if my lawn mower coil is bad?

Replace the original wire with the in-line spark tester, and attempt to start the motor. Watch for the same intensity of a spark that you saw when the mower was cold, If there is little or no spark, the ignition coil is bad and needs replacement.

What causes a coil to burn out?

The main cause of ignition coil burnout is the insulating material aging. For example, when the ignition coil high voltage can’t output smoothly, the current turbulence in coil will occur, causing the temperature to rise rapidly and accelerate the insulating material aging.

How long should ignition coils last?

Federal law in the United States dictates that the ignition coil and ignition module on new vehicles are warranted for at least two years or 24,000 miles, whichever occurs first. The insulation in the ignition coil will degrade over time, but many coils are designed to last 100,000 miles or more.

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How do you stop ignition coils from failing?

Keeping your spark plugs in optimum condition can reduce your chances of experiencing an ignition coil failure. As spark plugs wear down, the gap in which each spark plug is fired is widened, meaning the coil needs to provide a higher voltage in order to bridge the gap.

Why is my lawn mower not getting spark?

If no spark appears, check for broken wires, shorts, grounds or a defective stop switch. Once you have confirmed that the stop switch is working, reconnect the spark plug lead.

Can you clean a burnt coil?

So, carefully remove the coil from the hot water and submerge it in the cold water. … If you have done this and still experience the annoying burnt taste vape, then you can clean it using vinegar or lemon juice in hot water. This gets out the stubborn debris but shortens the lifespan of the coil since it is corrosive.

Do ignition coils need to be replaced?

The ignition coil on car is supposed to last around 100,000 miles or more. You will have reduced gas mileage when coil begins to go bad and becomes less able to transfer power. Your car requires more fuel to run, this means you will spend more money on gas than normal.

Do I need to replace all ignition coils at once?

You do not have to change all the ignition coils at the same time.

Do ignition coils wear out?

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. … Leaving a damaged ignition coil on a car for long periods of time will usually lead to more damage being done to the wires and plugs.

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