You’re driving along and your engine cuts out suddenly. Just when you think you’re in real trouble, it picks up speed again as if nothing ever happened. You let out a huge sigh of relief and continue on your way to work without any other engine trouble. Your engine cuts out again on your way home that evening. What could be wrong? Advanced Automotive explains this could be a sign that you need new spark plugs. Here are five signs your spark plugs are worn or dirty and cannot perform their job.
Your Engine Keeps Misfiring
Your spark plugs generate a spark to ignite the air/fuel mixture in your vehicle’s combustion engine. This starts your car and keeps it running. If your engine keeps cutting out while in motion or while sitting at a stop sign or red light, the spark plugs could be misfiring. This is the actual engine misfire you’re noticing.
Your Gas Mileage Is Lower Than Normal
If your engine isn’t performing as it should be, you might notice a difference in your gas mileage. This is because the engine is working harder than necessary to run and, as such, it’s using more gas. Low gas mileage is a sign that you need new spark plugs but also a sign of a handful of other problems, as well.
You’re Having Trouble Getting Your Engine Started
It’s natural to think that your battery is the problem when you cannot get your engine to start. You may also suspect your alternator or starter. Your engine cannot start without spark plugs, either, as mentioned above. Consequently, your engine may be slow to start if the spark plugs or wires are bad.
Your Vehicle Does Not Accelerate Quickly
Keep in mind, your car, truck, or SUV can only from zero-to-60 so fast. If you drive a sports car, it will accelerate more quickly than if you drive an economy car. If your car is having trouble accelerating, however, it’s wise to have your ignition and fuel systems inspected, as the problem likely lies there.
Your Engine Is Idling Roughly
Finally, pay attention to how your engine idles while you’re stopped. You shouldn’t feel any vibration or hear any unusual sounds. If your spark plugs are not firing as they should be, you might feel it when you’re sitting in traffic or when you’re waiting for a green light. Worn plugs can produce rough idles.
Located in Stanwood, WA, Advanced Automotive will inspect your spark plugs and replace them if necessary.