Spark Plug Replacement at your home or office in Walnut.

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Average rating from customers who
received a Spark Plugs Replacement.
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$96.47 - $616.68

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 Walnut

Excellent Rating


YourMechanic Spark Plug Replacement Service

Average Rating

4.9/5

Number of Reviews

3,721

Rating Summary
3,505
129
16
15
56
3,505
129
16
15
56

Joe

14 years of experience
366 reviews
Joe
14 years of experience
Joe explained was friendly and upfront about the services.
Joe is the man! Got job done and gave me more info about my ride. He knows his shhh.

Manuel

14 years of experience
60 reviews
Manuel
14 years of experience
Good job was done with explanation and attention for car care in future.

Anthony

32 years of experience
79 reviews
Anthony
32 years of experience
Great job with my car and got the job done quick.

Andrew

8 years of experience
29 reviews
Andrew
8 years of experience
on time , quick, efficient and knowledgeable

Daniel

20 years of experience
307 reviews
Daniel
20 years of experience
Professional

Mila

10 years of experience
93 reviews
Mila
10 years of experience
Mika was on time and super professional. Really made the whole experience super easy!

Brian

14 years of experience
60 reviews
Brian
14 years of experience
He Arrived on time ,greeting himself and then strait to the diagnostics. though he was not quoted for purchasing any spark plugs or wiring, he came prepared for both. While changing the spark plugs he was to able to answer any question i had and efficiently. Once the plugs were changed he then tested my truck to see if the same problem occured. everythng was fixed and ready to go. he even found something that i hadnt even caught which was my fuel injector. i am very satisfied with the work done and especially the cost. He definitely went above expectations and i would recommend him again.

Tavaris

13 years of experience
93 reviews
Tavaris
13 years of experience
Tavaris came to house and knocked out the work. He seemed very knowledgeable. I would have given him a 5 but he was late for my appointment due to an issue with a customer before me.

Shaun

9 years of experience
542 reviews
Shaun
9 years of experience
Good job performed and identified a couple of other issues for later repair. thanks

Mark

4 years of experience
13 reviews
Mark
4 years of experience
Great mechanic and guy. Diagnosed my problem and told me any additional things I needed to fix! Would recommend.


How much does Spark Plug Replacement cost in Walnut?

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

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2008 GMC Yukon XL 1500 $278 $134.44 $143.98 15% $327.94
2007 Chevrolet Trailblazer $281 $120.95 $159.98 16% $335.95
2015 Honda Civic $402 $321.84 $79.99 6% $429.34
2016 Lincoln MKZ $216 $55.72 $159.98 20% $270.72
2009 Audi A5 Quattro $339 $187.09 $151.98 13% $391.34
2011 Ford Mustang $158 $69.68 $87.98 16% $187.93

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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