Spark Plug Replacement at your home or office in Cedar Knolls.

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Service Area

Average rating from customers who
received a Spark Plugs Replacement.
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$96.47 - $642.49

Price range for all vehicles


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Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Average rating from customers who
received a Spark Plugs Replacement.
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Recent Spark Plug Replacement reviews in Cedar Knolls

Excellent Rating


YourMechanic Spark Plug Replacement Service

Average Rating

4.9/5

Number of Reviews

3,630

Rating Summary
3,416
128
16
15
55
3,416
128
16
15
55

Patrick

31 years of experience
1054 reviews
Patrick
31 years of experience
Patrick was very professional and even ask if it was okay to come earlier. Was able to change the spark plugs quickly and even provided me with some needed maintenance information for my vehicle. Thank you Patrick!
Patrick was wonderful. He sent me a text asking if he could come by earlier than our initial appointment time which worked out well for me. He changed the spark plugs and ignition coil and now my car runs like new. The garage wanted to charge me anywhere from $500-700 for this service. My total amount was less than half of that. Patrick was very professional. I'm telling everyone I know about this service and to NEVER take their car to a garage again.

Chris

20 years of experience
1644 reviews
Chris
20 years of experience
Chris was excellent!!
Arrived reasonably early and clearly explained the process.

Rob

17 years of experience
23 reviews
Rob
17 years of experience
Rob was great! He came on time, was prompt in communicating with me in advance of our appointment. He allowed me to watch while he was at work, and took the time to explain to me what he was doing, and what he was looking for. Great experience, extremely competent, extremely courteous and overall excellent service. Would definitely recommend Rob to everyone out there.

Jamahl

18 years of experience
830 reviews
Jamahl
18 years of experience
Jamahl was very detailed & provided a high level or quality & service, will definitely reach out to him for all future service requirements!!!

Quentin

20 years of experience
213 reviews
Quentin
20 years of experience
Awesome

Ian

13 years of experience
133 reviews
Ian
13 years of experience
Ian was courteous, quick and efficient! He contacted me before our appointment to make sure everything was in order and even contacted me the morning of the appointment notify me that he had time to show up earlier than our scheduled time if I like. Couldn't ask for more!

Michael

12 years of experience
57 reviews
Michael
12 years of experience
Michael, is out standing. He is honest and told me that what I thought and was told was wrong with my truck was not even the issue. He even took the time to show me exactly what the issues were. My truck runs so much better and quitter than before. A simple thing as spark plugs being changed had made my engine run much better. Thank you Michael.

Chet

39 years of experience
440 reviews
Chet
39 years of experience

Joseph

31 years of experience
540 reviews
Joseph
31 years of experience
great service

Danny

9 years of experience
269 reviews
Danny
9 years of experience
Danny was very knowledgeable and careful with his work. With the initial visit I needed an additional part which he was able to explain to me why and then he came back two days later to install everything. He took his time and made sure it was done right. When completed he gave me recommendations for other repairs that I may need in the near future. I would definitely use Danny again and I recommend him to anybody that needs work done on their vehicle.


How much does Spark Plug Replacement cost in Cedar Knolls?

It depends on the type of car you drive and the auto repair shop you go to in Cedar Knolls. Our mechanics in Cedar Knolls are mobile, which means they don't have the overhead that repair shops have. They provide you convenience by coming to your home or office in Cedar Knolls.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2005 GMC Jimmy $176 $55.98 $119.98 18% $217.23
2007 Toyota Highlander $305 $89.16 $215.97 19% $379.41
2007 Ford Freestyle $279 $110.80 $167.97 17% $336.55
2007 Lexus RX400h $313 $97.08 $215.97 19% $387.33
2014 Cadillac CTS $253 $100.64 $151.98 17% $304.89
2014 Jaguar F-Type $361 $216.80 $143.98 12% $410.30

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Spark Plug Replacement Service

What are spark plugs and how do they work?

Spark plugs are one of the key components of your vehicle’s ignition system. They ignite gasoline and air inside of your engine. This gives your engine the power to propel you down the road. The spark plug takes high voltage electricity from the ignition coil and creates a spark at just right moment during the engine’s combustion cycle. This gives the engine the best mix of power, fuel economy and low emissions. However, the electrode at the end of the spark plug eventually wears out and can cause performance issues.

Spark plugs-MATROX-1

When should you replace spark plugs?

Replacement should follow the vehicle maintenance schedule. This will be listed in the vehicle’s owner’s manual. Some cars require regular replacement at 30k, 60k or 100k miles. It is possible in some cases that a spark plug might fail before the service schedule, but it’s not typically common.

Avoiding spark plug replacement can cause:

  • Difficulty starting your car.
  • Check engine light for a misfire code.
  • Flashing check engine light during acceleration for misfire, this can cause engine damage.
  • Reduced fuel economy and/or power.
  • Rough idle and/or unexplained engine vibration.
  • Failed State emission testing.

Even if only one spark plug is found to be faulty, they should always be replaced in sets. Most engines will require 4,6, or 8 spark plugs.

How do mechanics replace spark plugs?

Spark plugs are threaded into the engine’s cylinder head(s). Most cars have one plug per cylinder, so a four-cylinder engine will have four plugs, a six-cylinder engine will have six plugs, and so forth. The mechanic will:

  • Have the correct spark plugs on hand for your vehicle
  • Pull any diagnostic trouble codes that may be related to worn spark plugs.
  • Remove the original spark plugs and look at removed spark plugs for any clues indicating engine mis-operation exists; such as oil burning, excessively rich mixture, pre-ignition damage etc. Inform owner of any found unusual conditions.
  • Install new plugs using a torque wrench.
  • Finally, a road test of the vehicle to confirm normal operation.

Is it safe to drive with worn spark plugs?

Yes, but spark plugs that are worn enough to cause engine-misfiring have the potential to cause engine damage and overheating of the catalytic converter. Regardless of the age of the plugs, or mileage, if the engine misfires or runs poorly, the plugs should be inspected for defects. Generally, spark plug failure will not keep the engine from running, but in cases of extreme wear, you may experience a limitation in the speed at which you can drive the car. If the maintenance schedule says the plugs should be replaced, it is best to do so promptly.

When having spark plugs replaced keep in mind:

  • High-speed driving may accelerate spark plug wear. Consider earlier than required inspection and tune-up if you operate the car in severe conditions.
  • Plugs should always be promptly replaced per the manufacturer maintenance schedule even if they appear to be working perfectly.
  • If your vehicle is equipped with spark plug wires (as opposed to a coil-on-plug system), the wires should be replaced at the same time. This may increase the cost of your repair.
  • It is possible that when doing a spark plug replacement, your vehicle may also need additional parts like ignition coils, this will add to the repair cost.
  • Some engines require that the intake manifold be removed while replacing spark plugs. This may increase the parts and labor cost for the repair.
  • Leaking valve cover gaskets, which have let oil get in contact with the spark plugs, coils or wires, may be the cause of ignition system issues. Valve cover gaskets will need to be replaced in addition to the spark plugs, wires or coils. This will add to the repair cost.

Fast and easy service at your home or office

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Backed by 12-month, 12.000-mile guarantee


How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com