While your engine runs on gasoline, it also requires electricity. It’s needed to operate most of your accessories, but is also required to make the engine run. Spark plugs connect to wires that lead to the ignition system.... Show While your engine runs on gasoline, it also requires electricity. It’s needed to operate most of your accessories, but is also required to make the engine run. Spark plugs connect to wires that lead to the ignition system. Electricity is created by the alternator and sent to the plugs, which create arcs of electricity. This is what ignites the fuel in your engine’s cylinders, creating the combustion that pushes the pistons down and actually turns the engine. Spark plugs are vital parts of your car. Spark plug wearLike most other components of your engine, spark plugs wear down over time. The primary type of wear here is with the electrode. If you look at a spark plug, you’ll notice one end is narrow and tapered – this is where the wire connects to it. The other end is bulbous, with a small metal rod coming out of the center, and a metal hook to one side. That center rod is the electrode – electricity arcs from that to the hook. Through normal use, the electrode on each spark plug does wear down. Eventually, it becomes so worn that it doesn’t create as much (or any) electric arc, which has a direct and immediate effect on your engine operation. When to replace spark plugsIf you check your owner’s manual, you’ll probably find that your automaker recommends you replace your spark plugs roughly every 30,000 miles. That’s fine if you’re using stock spark plugs. However, the actual timing of replacement will vary depending on other factors.
If your engine seems to be running rough, or skipping, chances are good that it’s time to have your plugs replaced. Other symptoms can include rough idling and stalling. The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details Excellent RatingRating SummaryPardeep21 years of experience 1068 reviews Pardeep 21 years of experience Jeep Cherokee V6-3.2L - Spark Plugs - Cupertino, California Great service. Looking forward to build a good relationship different from the usual mechanics that is always trying to charge you more. Pradeep made me the impression that he is different. Cool. Toyota Prius - Spark Plugs - Fremont, California Mr. Singh was on time, gave good advice and did the services very well. By the way, this is the third time I have my car serviced by him. Keven7 years of experience 118 reviews Keven 7 years of experience Kia Soul L4-2.0L - Spark Plugs - Puyallup, Washington Kevin, is wonderful. He is on time and very efficient. He explains things very well and answered all my questions. Very friendly too. I would highly recommend Keven and plan on using him again if mechanic service is needed. Toyota Sienna - Spark Plugs - Spanaway, Washington He was very efficient, very knowledgeable and very sweet. Thank you for your time and your patience with my vehicle. Claud8 years of experience 475 reviews Claud 8 years of experience Dodge Durango V8-4.7L - Spark Plugs - Detroit, Michigan On time, very knowledgeable, and professional. Excellent job, thank you. Will call for service again. Ford Flex - Spark Plugs - Rochester, Michigan Claud did a great work for a big job on my car. Brought it back from the dead. Will definitely be booking him in the future. Rodney36 years of experience 541 reviews Rodney 36 years of experience Volkswagen CC L4-2.0L Turbo - Spark Plugs - Sacramento, California Awesome mechanic worked really fast and help me understand a lot more about my car honestly I didn’t know much and he was really helpful and definitely will be booking with him again
Jeep Cherokee - Spark Plugs - Elk Grove, California I’m so pleased with Rodney, he’s very thorough. This is my third time using Rodney (Your Mechanic). I have no complaints. I appreciate him repairing my vehicle. Need Help With Your Car?Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair. GET A QUOTE Related articlesRelated questionsStarter will not turn over, nor engage Hi there, thank you for asking about your 2003 Infiniti FX45. The battery replacement has activated the "immobilizer" security feature. Consult your owners manual for instructions on how to disarm the system. Also, after replacing the battery, there is a... Engine steam and antifreeze leak - 1976 Mercedes Benz 450SL Hello. This sounds like the water pump (https://www.yourmechanic.com/services/water-pump-replacement), radiator (https://www.yourmechanic.com/services/radiator-replacement), radiator hoses (https://www.yourmechanic.com/services/radiator-hose-replacement), or even one of the heater hoses (https://www.yourmechanic.com/services/heater-hoses-replacement), have started to leak. It is also possible that the gasket to the thermostat could have a leak as... Can you help? My car stopped starting. Hi there. Check the spark plugs and wires to see if the engine is getting any spark to the cylinders. If there is no spark and the spark plugs (https://www.yourmechanic.com/services/spark-plugs-replacement) are white in color, then I recommend replacing the spark... How do I know if my spark plugs need changing?5 Signs You Need New Spark Plugs. Engine Misfires. A misfiring engine is a big sign that one or more of your spark plugs are not firing properly. ... . Poor Gas Mileage. When spark plugs are working correctly, they burn fuel efficiently in your engine. ... . Trouble Starting. ... . Slow Acceleration. ... . Rough Idling.. How long do spark plugs last in a car?How long spark plugs last varies by manufacturer and vehicle, but on many vehicles today, they should be good for 100,000 or more miles. Some vehicles, though, will have shorter intervals, particularly performance and luxury models.
What happens if you don't change your spark plugs?If you let your spark plugs go for too long, you could do some severe damage to your engine. The deposits that build upon the plugs can eventually cause them to misfire. When this happens, the unburned fuel in the cylinders can start to eat away at the cylinder walls.
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