Spark Plug Replacement at your home or office in Redwood City.

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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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Average rating from customers who
received a Spark Plugs Replacement.
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Recent Spark Plug Replacement reviews in Redwood City

Excellent Rating


YourMechanic Spark Plug Replacement Service in Redwood City

Average Rating

5/5

Number of Reviews

12

Rating Summary
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Grzegorz

39 years of experience
472 reviews
Grzegorz
39 years of experience
Great mechanic - what a refreshingly positive experience!

Whitney

37 years of experience
783 reviews
Whitney
37 years of experience
Whitney did a great job. He ensured that my car is running normal again. He showed up early and completed the work ahead of schedule. I will definitely schedule him again.
Whitney was again great and as Professional as can be. Not only was he able to give the what it needed but was able to do it in a timely manner. I am so glad he has brought this service from the East Coast to here; one of the best ideas ever and it came from such a great person. It is very hard to find honest and reliable people like Whitney and I am glad I chose him.

Dan

37 years of experience
730 reviews
Dan
37 years of experience
honest, very thorough, reliable
Dan is the man, knowledgeable, courteous, professional will only use Dan for all my cars

Khoa

18 years of experience
362 reviews
Khoa
18 years of experience
He was on time, extremely efficient, and seemed to do very good work

Trung

10 years of experience
406 reviews
Trung
10 years of experience
Trung was excellent. He is highly competent, knowledgeable, professional and personable. He was thorough in his work and clear in communicating his observations and recommendations. I will definitely request him the next time I need something done on my Lexus and would gladly recommend him to others.

Jason

7 years of experience
175 reviews
Jason
7 years of experience
Friendly and knowledgeable. He did a great job.

Mark

9 years of experience
349 reviews
Mark
9 years of experience
He did a valve cover replacement on my BMW. Did a great job and did it faster than quoted. Really did a good job

Adam

15 years of experience
48 reviews
Adam
15 years of experience
Adam was very friendly, took care of the job quickly, and provided lots of information at the end of the service.

Jose

12 years of experience
21 reviews
Jose
12 years of experience
On time, polite and straight to work. Completed the job quickly, no mess on or around my car. I totally recommend this awesome service to anyone! Kudos to who started this and Thank You! I will use this service for the rest of my car needs...sorry Hyundai Dealership.

Amor

41 years of experience
181 reviews
Amor
41 years of experience


How much does Spark Plug Replacement cost in Redwood City?

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

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2009 Ford Explorer Sport Trac $235 $122.96 $111.98 14% $273.46
2012 Hyundai Accent $166 $86.36 $79.99 14% $193.86
2014 Nissan Versa Note $173 $93.00 $79.99 13% $200.50
2013 Audi Q5 $168 $87.68 $79.99 14% $195.18
2013 Cadillac Escalade $235 $115.04 $119.98 14% $276.29
2005 Mercedes-Benz SLK55 AMG $680 $455.86 $223.97 10% $756.86

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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.

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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