The auto mechanics and the rest of our team at Import Auto Specialists in San Diego love to educate our customers, and that’s why we write this blog. Any way that our auto repair team can provide you useful information, that’s exactly what we want to do. That’s also why we perform digital inspections and take the time to listen to you thoroughly and what you have to say about your car. Import Auto Specialists in San Diego offers a 3 year/36,000 mile parts and labor warranty on most repairs. We also have a 3 Year/36,000 Mile NAPA AutoCare Peace of Mind Warranty on parts and labor. To make your experience with us even better, when you bring your vehicle in for any major service or repair, you’ll drive away with a vehicle that has received a complimentary full-service! When you are ready for top-quality auto care, give us a call at 858-576-7186, or schedule an appointment today. We hope you enjoy our blog!

Common Signs of Faulty Spark Plugs

Spark Plugs ignite fuel in the combustion chamber to create a small explosion to power the engine. Thus, spark plugs play an essential role in the ignition system. Spark plugs are made of durable material that can withstand millions of explosions. However, over time the spark plugs can become worn and corroded, leading to weaker and smaller sparks. If the spark plugs aren’t replaced, the engine performance will be drastically impacted with a loss of efficiency. In severe cases, worn spark plugs can cause the engine to misfire or fail to fire altogether. Below are five significant signs that your spark plugs need to be replaced. 

Bad Gas Mileage 

If the spark plugs are bad, you may need to make more frequent trips to the gas station. Faulty spark plugs can lead to a significant increase in fuel consumption, leaving a dent in your wallet. 

Lack of Acceleration Power

If your vehicle is struggling to accelerate and it takes longer to reach top speed, the spark plugs can be going bad. A lack of acceleration problems can sign multiple issues; it’s essential to have our vehicle inspected for mechanical failure in other components.

Engine Struggles to Start

The spark plug is a part of the larger ignition system with multiple components that work together to power the engine. If the spark plugs send a weak electrical current, the engine will struggle to start. 

Engine Misfire 

Most vehicles may experience a misfire if there’s a sensor malfunction, but the spark plug can be damaged in some cases. If the engine misfires, the check engine light will start flashing, and you may also notice the engine knocking. In addition to harsh engine sounds, a misfire can cause damage that can cause severe performance issues. 

Engine Backfire

An engine backfire can occur for several reasons but usually indicates an imbalance of fuel to air ratio or a spark plug that’s misfiring. If the spark plugs are incorrectly wired, or the distributor caps are damaged, a backfire will occur in older vehicles. New vehicles aren’t excluded; if the spark plugs haven’t been replaced in a while, carbon can buildup. This can cause even a newer car to backfire. 

Spark Plug Replacement in San Diego, CA

If you notice any of the above signs, Import Auto Specialist has a dedicated team available to assist you. We are a full-service AAA approved auto repair shop. We use the latest diagnostic tools and high-quality equipment. If you need to leave your vehicle, don’t forget to ask us about our free local shuttle. 

Click here to schedule an appointment or give us a call at 858-221-4742. 


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