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Lexus NX300 Spark Plugs Replacement Costs
AutoNation Mobile Service offers upfront and competitive pricing. The average cost for Lexus NX300 Spark Plugs Replacement is $148. Drop it off at our shop and pick it up a few hours later, or save time and have our Delivery mechanics come to you.
3. Disconnect the ignition coil connector or the spark plug wire of the spark plug they’ll replace first. They’ll ensure not to tear off the wire terminal from the plug wire end. If the wire is damaged, they’ll replace it.
4. Unscrewthe old spark plug using a spark plug socket.
5. Clean the spark plug hole to remove debris. This debris can damage the cylinder head threads.
6. “Gap” the new spark plug using a spark plug gauge if it isn’t “pre-gapped”. They’ll check your owner’s manual for the engine’s plug-gap specifications.
10. Reinstall the ignition coil or spark plug wire connector.
11. They’ll repeat the process for the other plugs.
12. Reinstall the engine cover and start the engine to ensure everything works after installing the new plug set.
How Much Does Spark Plug Replacement Cost?
Getting spark plugs replaced with new inventorycan cost between $100 and $500 (including car parts and labor costs). The cost of installing new plugs can depend on your location, vehicle model, and type of spark plug.
Here are individual estimates for new plugs (based on type):
Copper spark plugs: $2 to $10 per piece
Platinum spark plugs: $10 per piece
Double platinum spark plugs: $20 per piece
Iridium spark plugs:$20 to $100 per piece
Spark plugwires:$140 to $175
Note: You may also need to replace spark plugwires if you drive an older vehicle with a distributor ignition system.
How Often Will I Need to Replace Spark Plugs?
Most manufacturers recommend getting spark plug service or new inventory every 30,000 miles. However, your spark plug’s lifespan can range between 10,000 miles and 150,000 miles depending on the:
Consult your owner’s manual to know when to change spark plugsandthe correct type for your vehicle. It’s also good to check the ignition coil and spark plugwireswhen replacing yourold spark plugs.
What if they go bad? Get faulty spark plugs replacedimmediately since they can cause poor acceleration and enginemisfires. The latter could damage the catalytic converter, decrease fuel economy, and cause irreversible engine damage.
Your car battery may also die from repeatedly trying to crank your car.
That’s why you should get your spark plugs checked while doing car maintenance and tune-upactivities for other car parts, like brake pads or oil change service.
What Are the Common Symptoms of Failing Spark Plugs?
Faulty spark plugs can lead toautomotivesymptoms like:
Unburned fuel reaches the vehicle’s exhaust system when a spark plug issuedoesn’t ignite the air-fuel mixture properly in the combustion chamber. This makes emissions smell like gasoline.
2 Spark Plug Replacement FAQs
Here are answers to questions that may arise when facing a spark plug issue:
1. Why Do Old Spark Plugs Need Replacing?
Every time a spark forms between the spark plug’s center and ground electrodes, it burns offmetal from each electrode, creating a gap. This spark plug gap increases as yourplugsfire during engine operation.
Over time, the spark plug gap grows so much that the required spark no longer forms, and the spark plug fails.
2. Do I Need to Replace All the Spark Plugs?
Ideally, you should change all the spark plugs together.
If you only replace bad spark plugs, each spark plug in your engine will have a different replacement cycle. Consequently, you’ll need to spend more effort on car care and auto repair whenever each spark plugfails.
Moreover, yourcar engine works best when all the spark plugs have similar performance levels. For instance, if two spark plugs in a four-cylinder engine perform differently than the rest, it can lead to the engine running out of sync.