The check engine light warns of issues ranging from a gas cap that's not properly tightened to a more dangerous failure like a bad catalytic converter or a problem with one of the car's oxygen sensors, so it comfortable to get the decent code reading and diagnosis. The comfortable news, Nalley Honda offers complimentary multi-point inspections and free diagnostics, in most cases, to aid mean the cause of your check engine light. The average estimate for a check engine light diagnosis & testing is frequently between $88 and $111. If that’s the case, you could put in new spark plugs, but they’d just get dirty again.How much does it cost to get the engine light checked? If you don’t know how to replace the spark plugs, you could hurt the engine’s performance and have to pay for more expensive repairs in the future.Īlso, a professional mechanic can give you better advice based on the state of the spark plugs.įor instance, if your spark plug has oil on it, there may be other problems with the engine and ignition system of your car. The total cost can also change based on the make and model of the car, the brand spark plugs used, your location, Can I change a bad spark plug myself?īut only do that if you know a lot about cars and have a lot of experience with them. How much does it cost to change a spark plug?Ĭhanging the spark plugs in your car can cost between $100 and $250 on the low end and between $250 and $500 on the high end.Ĭost: A copper spark plug costs between $2 and $10 each, while a premium spark plug made of iridium or platinum costs between $20 and $100 each.Ĭost of labor: For a four-cylinder engine, expect to pay $60–$140 for labor, and for a six-cylinder engine, $260–$320. For instance, a spark plug made of copper won’t last as long as one made of a stronger material, such as platinum or iridium.Īlways replace spark plugs in pairs (one for each cylinder) and use the plugs specified by the owner’s handbook or the vehicle’s manufacturer. ![]() ![]() Most car makers recommend getting new spark plugs every 30,000 miles, but depending on the type of spark plugs your car has, you may be able to go up to 100,000 miles. Because of this, the exhaust from the car may smell like gasoline.Īlso Read: How To Read Spark Plugs A Complete Guide If your spark plug doesn’t burn the air-fuel mixture well, unburned fuel (or gasoline) will get into the car’s exhaust system. In the end, this damages the catalytic converter, which can lead to expensive repairs. When an engine misfires, raw fuel goes into the exhaust, raw fuel goes out the exhaust. You may also hear a “pop” from the engine when it loses power before regaining the right timing. When this happens, the owner of the car will notice that the engine speed slows down and then speeds up again. ![]() A misfire in an engine is often caused by at least one old spark plug. There are many things that can cause an engine to misfire, like bad fuel or valves that leak, but those may not be the only culprits in this case. ![]() Here’s a closer look at how each of the signs can be caused by bad spark plugs. Some of the most common signs that spark plugs need to be replaced are: Many people don’t know how to tell if a spark plug is bad, though. When you drive with dirty or broken spark plugs, you can cause a lot of damage to your engine. A fouled or bad spark plug is one that is covered with something like oil, fuel, or carbon, or is blistered from running too hot. If your spark plugs get dirty or clogged, it can make your engine run less well. This is done by the spark plug, which makes a spark that lights the air-fuel mixture in the combustion engine.įor your engine to run at its best, the spark plugs should be clean and the electrodes should not be broken. Even though it’s small, a spark plug is a very important piece of equipment.
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