Spark Plug Replacement at your home or office in Exton.

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Average rating from customers who
received a Spark Plugs Replacement.
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$86.47 - $615.97

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 Exton

Excellent Rating


YourMechanic Spark Plug Replacement Service

Average Rating

4.9/5

Number of Reviews

3,416

Rating Summary
3,214
121
16
15
50
3,214
121
16
15
50
Jacob

Jacob

12 years of experience
59 reviews
Jacob
12 years of experience
Very punctual a did a Great job.
Jacob was great! He explained what he was doing and gave different tips on maintenance and the when to’s and why’s! I’d definely use Jacob again for my car maintenance/repair needs! YourMechanic...you’ve selected right when you hired Jacob!!!!
Jonathan

Jonathan

32 years of experience
216 reviews
Jonathan
32 years of experience
He answered all my questions and was happy to show me what was exactly wrong with my car. I also loved that he was early to the appointment.
Hot morning over 90 degrees. Nice person who really knows his stuff. Had the job completed real quick. His truck is complete with every tool possible. Excellent service to say the least! Thanks, Jon
Jamahl

Jamahl

17 years of experience
703 reviews
Jamahl
17 years of experience
Awesome Job!!! Came out early, diagnosed my issue and was able to squeeze me in later that day to fix the problem. Very professional!
Henry

Henry

31 years of experience
96 reviews
Henry
31 years of experience
Henry never disappoints. He takes his time and doesn't mind explaining what he's doing. I'll recommend him to my friends and family..Thank you Henry..
Adam

Adam

26 years of experience
95 reviews
Adam
26 years of experience
Adam was amazing! Not only did he fix our car, but he goes the extra mile in customer care! Highly recommend!
David

David

25 years of experience
141 reviews
David
25 years of experience
David performed several jobs for me today on my 2004 Toyota Corolla S. While changing the front brake pads, as scheduled, he pointed out that they could go several more months before needing to be changed. I wouldn't have known the difference one way or another and he could have just kept silent and made the $140 extra which he was scheduled to make all along. Thanks for the heads-up David! See you soon.
Shaun

Shaun

18 years of experience
204 reviews
Shaun
18 years of experience
Shaun's earlier appt cancelled so called to see if he could come earlier, so . . .'thumbs up'. Arrived shortly after he called, got right to work and finished within the time allotted for this job. Loved that he actually took my car for a 'test drive' after changing the spark plugs plus the rear brakes to make sure that all was in good standing. Yeah!!! Great job Shaun! :)
Jose

Jose

12 years of experience
245 reviews
Jose
12 years of experience
Jose was incredibly punctual, efficient, courteous & definitely professional. He arrived early and was quite respectful as he started the work of fixing a cylinder on a Lincoln Town car. We most certainly would recommend him for any repair.
Chris

Chris

8 years of experience
82 reviews
Chris
8 years of experience
Chris was very knowledgeable and friendly. He did a great job and I will definitely book him again!
Richard

Richard

18 years of experience
451 reviews
Richard
18 years of experience
Excellent!


How much does Spark Plug Replacement cost in Exton?

It depends on the type of car you drive and the auto repair shop you go to in Exton. Our mechanics in Exton 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 Exton.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2012 Chevrolet Colorado $176 $71.90 $103.98 16% $211.65
2007 Volvo S40 $155 $43.10 $111.98 19% $193.60
2013 Chrysler Town & Country $347 $202.95 $143.98 12% $396.45
2007 Cadillac STS $346 $194.38 $151.98 13% $398.63
2013 Infiniti M56 $454 $286.03 $167.97 11% $511.78
2007 Porsche 911 $582 $94.26 $487.93 22% $750.01

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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