Spark Plug Replacement at your home or office in West Covina.

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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 West Covina

Excellent Rating


YourMechanic Spark Plug Replacement Service

Average Rating

4.9/5

Number of Reviews

3,564

Rating Summary
3,353
127
16
15
53
3,353
127
16
15
53

Godwin

22 years of experience
253 reviews
Godwin
22 years of experience
This is my second service with Godwin, have been very impressed both times. He is prompt, friendly, and very knowledgeable, would highly recommend.

James

28 years of experience
551 reviews
James
28 years of experience
James knows what he is doing and smiles when he does it.

Theodore

14 years of experience
1073 reviews
Theodore
14 years of experience
Excellent as always.

Matt

15 years of experience
23 reviews
Matt
15 years of experience
Matt was extremely professional and provided valuable feedback on the health of the car as well.

Michael

14 years of experience
500 reviews
Michael
14 years of experience
Thank you Michael!!

Lee

36 years of experience
81 reviews
Lee
36 years of experience
Great Experience! Will definitely use again!

Torrieanto

10 years of experience
469 reviews
Torrieanto
10 years of experience
Guy clearly knows what's up when it comes to cars, all business, comes over, gets the job done immediately and professionally. Highly recommend.

Ivan

10 years of experience
26 reviews
Ivan
10 years of experience
Ivan did a very professional job. He explained everything and he did take special care of the complicated reassembly of the parts. I'm very satisfied with his job and I will book him on the next job.

Scott

34 years of experience
593 reviews
Scott
34 years of experience
Service was great as always!

Joel

19 years of experience
740 reviews
Joel
19 years of experience
Outstanding as usual! I am a repeat customer and tis mechanic makes the company look good everytime he finishes a job.


How much does Spark Plug Replacement cost in West Covina?

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

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2010 Volvo XC90 $215 $134.58 $79.99 11% $242.08
2013 GMC Sierra 1500 $272 $127.79 $143.98 15% $321.29
2007 Toyota Highlander $139 $59.44 $79.99 16% $166.94
2010 BMW X5 $487 $302.76 $183.97 11% $550.01
2011 BMW 328i xDrive $251 $139.50 $111.98 13% $290.00
2010 Chevrolet Corvette $360 $192.06 $167.97 13% $417.81

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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