Signs Your Local Car Dealer Needs to Look for a Faulty Ignition Coil

A car’s ignition coil transforms your low voltage power into the thousands of volts needed to create an electric spark in the spark plugs, igniting the fuel. When this crucial part fails, your vehicle’s performance can severely deteriorate, and fast. It’s easy to overlook the signs of a problem: or just ignore those signs for a bit too long. However, paying attention to subtle changes in your car’s behavior can really pay off in the long run. If you see signs of a faulty ignition coil, get it to your car dealer right away to prevent expensive repairs down the line.

Difficulty Starting the Engine

One of the earliest warning signs of a failing ignition coil is a problem with starting the engine. You might find that your car takes longer to start or doesn’t start at all. A bad ignition coil fails to provide the necessary spark for combustion, hence the struggle to start the engine. This failure can result from wear and tear, improper voltage, or heat damage over time.

Stalling and Rough Idling

Another sign to watch out for is engine stalling or rough idling, especially for manual transmissions. An ignition coil in decline can cause sporadic and uncontrolled sparks. These irregular sparks lead to incomplete fuel combustion, causing your engine to run unevenly, or idle roughly. You might notice the car stalling when you stop at traffic lights or while shifting gears. This symptom is attributable to the irregular sparks affecting the engine’s RPM during gear changes.

Reduced Fuel Efficiency

You might observe a sudden drop in your car’s fuel efficiency. This dip in fuel economy happens when a failing ignition coil causes incomplete combustion in the engine, leading to excessive fuel consumption. Your car has to work harder and consume more fuel to deliver the same level of performance.

Engine Misfires

Lastly, engine misfires are a telltale sign of a failing ignition coil. Misfires occur when one of the engine’s cylinders doesn’t function correctly, leading to erratic performance. An ignition coil that doesn’t consistently deliver the right amount of voltage can cause this issue. The engine may run smoothly one moment and stumble the next, which can be particularly noticeable during acceleration.

Difficulty starting the engine, stalling and rough idling, reduced fuel efficiency, and engine misfires are all indicators that something might be amiss with your ignition coil, and addressing these issues promptly can save you from potentially much higher repair costs and ensure a smooth and reliable ride. Come see us at Duncan Suzuki right away if you suspect anything is wrong with your ignition coil.

Tags: Engine Repair, Ignition Coil Service
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