Spark Plug Replacement at your home or office in Rockville.

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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 Rockville

Excellent Rating


YourMechanic Spark Plug Replacement Service

Average Rating

4.9/5

Number of Reviews

3,573

Rating Summary
3,362
127
16
15
53
3,362
127
16
15
53

Charles

15 years of experience
176 reviews
Charles
15 years of experience
Echoing others, he's very friendly and would explain things in plain English and would answer any question. Like others, I'm planning to book this gentleman again in future for any follow-ups.
Before our appointment Charles got in touch with me to discuss what my car needed. On the day of, he arrived right on time and was friendly and professional. He got my oil changed, tires rotated, and spark plugs replaced in a timely manner, and after he was done, he was very helpful in explaining the results of his inspection and what maintenance I will need in the future. I will definitely be contacting him with those maintenance needs when they arise. Side note - I took a four hour road trip the next day and my car ran wonderfully!

Grzegorz

39 years of experience
472 reviews
Grzegorz
39 years of experience
Grzegorzs was great. He arrived exactly on-time and talked me through everything. Finished early and cleaned up well.
Great guy.

Dellano

16 years of experience
377 reviews
Dellano
16 years of experience
Great service

William

31 years of experience
69 reviews
William
31 years of experience
William is a great person and mechanic . Knowledgeable , not only on cars but on many other subjects. The job that he did was completed professionally and timely . Definitely will have him back for any other issues on my cars.

Quentin

20 years of experience
213 reviews
Quentin
20 years of experience
On time and very professional

Travis

11 years of experience
50 reviews
Travis
11 years of experience
There is nothing a person with car issues love more than an HONEST MECHANIC. Travis serviced my C300 Mercedes by replacing my sparks plugs. Initially the service was suggested to be roughly $400. Well, Travis was not only on time and ready to get the job done, but he notified me that additional parts and labor wasn’t needed as part of the service which reduced the bill by $100. I understand that driving foreign can get quite expensive. However we all know, in many cases mechanics will not inform you of this and will still charge you, if not more. I appreciate his time, attentiveness, and honest service. He completed the job very quickly as well. I can already tell the difference in the performance of the vehicle. Thanks Travis, you have my stamp of approval and Im looking forward to having you service my car again in the future.

Tien

21 years of experience
896 reviews
Tien
21 years of experience
Tien was excellent!!! Not only is he timely he was early and finished the job in an ample amount of time. I appreciated tbe fact that i had to change lications at the last minute and he still made himself available. Thank you to "Your Mechanic" for great service!!!

Augie

29 years of experience
263 reviews
Augie
29 years of experience
Augie was very professional and extremely knowledgable. Not only did he fix the problem I had with my car but also gave me lots of advice for how to look after my vehicle and prevent further issues.I would have paid a lot more money for this service if I had taken my vehicle to a garage or service centre. I thoroughly recommend using Augie if you have any problems with your car.

Dominic

26 years of experience
128 reviews
Dominic
26 years of experience
Fast, friendly and honest service, I will be recommending him to anyone looking for a good mechanic. Thank you

Pedro

12 years of experience
39 reviews
Pedro
12 years of experience
Friendly, fast and very helpful thanks!,


How much does Spark Plug Replacement cost in Rockville?

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

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2010 Dodge Dakota $128 $32.28 $95.98 20% $161.28
2006 Dodge Grand Caravan $271 $143.36 $127.98 13% $315.36
2005 Mitsubishi Lancer $141 $61.48 $79.99 16% $168.98
2014 Lincoln Navigator $454 $309.72 $143.98 9% $503.22
2011 Lexus IS350 $573 $365.20 $207.97 11% $644.70
2011 Porsche Cayenne $456 $312.11 $143.98 9% $505.61

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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.

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.

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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