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

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Service Area

Average rating from customers who
received a Spark Plugs Replacement.
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$96.63 - $636.71

Price range for all vehicles


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Average rating from customers who
received a Spark Plugs Replacement.
Learn More



Recent Spark Plug Replacement reviews in Union City

Excellent Rating


YourMechanic Spark Plug Replacement Service

Average Rating

4.9/5

Number of Reviews

4,066

Rating Summary
3,836
134
18
16
62
3,836
134
18
16
62

Brandon

19 years of experience
773 reviews
Brandon
19 years of experience
Brandon was timely, professional, and courteous. He went above and beyond with his service, and thoroughly explained his work. The car is running great again. Thanks!
Great mechanic. Very knowledgeable.

Jonathan

34 years of experience
398 reviews
Jonathan
34 years of experience
As always yourmechanic is cost effective and convenient. I always tell coworkers and friends about yourmechanic.
Jonathan got here right on time he jumped right in on the last three plugs on a 3.3 L V-6. First time user and I gotta tell you I'm really impressed I'll be using them again.

Steve

14 years of experience
129 reviews
Steve
14 years of experience
Steve was great and easy to work with. He was very knowledgeable and explained everything I needed to know.

Casey

15 years of experience
44 reviews
Casey
15 years of experience
Casey was on time, he was pofessional and fixed the car. I would recommend him.

Jeffrey

26 years of experience
870 reviews
Jeffrey
26 years of experience
Our new mechanic for life!!! Very honest and great guy!!

Ryan

17 years of experience
62 reviews
Ryan
17 years of experience
Amazing got everything done in under 2 hours very good

Dan

38 years of experience
789 reviews
Dan
38 years of experience
Dan showed up and got straight to work and was very professional.

Maxwell

17 years of experience
390 reviews
Maxwell
17 years of experience
Great guy and even better mechanic. Highly recommend

Michael

15 years of experience
574 reviews
Michael
15 years of experience
Thank you Michael!!

Jacob

11 years of experience
320 reviews
Jacob
11 years of experience
Excellent communicator! Very knowledgeable!


How much does Spark Plug Replacement cost in Union City?

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

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2012 Toyota Camry $141 $61.44 $79.99 16% $168.94
2015 Nissan Armada $356 $275.92 $79.99 7% $383.42
2008 Ford Explorer Sport Trac $240 $127.92 $111.98 13% $278.42
2012 Acura RL $234 $153.84 $79.99 10% $261.34
2012 Infiniti G25 $450 $306.27 $143.98 9% $499.77
2013 Ford Mustang $220 $100.24 $119.98 15% $261.49

Fast and easy service at your home or office

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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

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 (855) 347-2779 · hi@yourmechanic.com