Spark Plug Replacement at your home or office in Placentia.

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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 Placentia

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

Jeffrey

25 years of experience
839 reviews
Jeffrey
25 years of experience
Jeffery was great! Did the work correct timely. Very nice reliable guy.
This was my first time using a mobile mechanic service. I was a little scared to try it. But Jeff made it an awesome experience. He was extremely thorough. I will be booking him again soon.

Dave

21 years of experience
303 reviews
Dave
21 years of experience
Excellent in every way.

Brian

20 years of experience
132 reviews
Brian
20 years of experience
Was very knowledgeable and personable and most importantly made my car run perfectly!

Travis

16 years of experience
92 reviews
Travis
16 years of experience
excellent!

Jamahl

18 years of experience
827 reviews
Jamahl
18 years of experience
First experience with Your Mechanic was great. Jamahl knows his stuff, and explains everything clearly. Will definitely use him again. Thanks!

Travis

11 years of experience
309 reviews
Travis
11 years of experience
Travis was great. He showed up on time and talked me through my vehicle needs. Travis finished in a timely manner and then showed me other maintenance my vehicle needs. We made an appointment right then and there for my next repairs. Thank you Travis.

Wilson

11 years of experience
283 reviews
Wilson
11 years of experience
Wilson was great, worked on my truck a couple of times now. Nice gentleman, very knowledgeable, fast, clean and on time, more then pleased with his service.

John

25 years of experience
457 reviews
John
25 years of experience
Very friendly and prompt. Great experience and will definitely use John for all my car repairs.

Chris

20 years of experience
1612 reviews
Chris
20 years of experience
Arrived reasonably early and clearly explained the process.

Joshua

18 years of experience
24 reviews
Joshua
18 years of experience
Everything about the experience with Joshua was great. He was extremely courteous and polite, on time (early actually), hard-working... what else is there to say? Thanks Joshua! We'll definitely be using your services again.


How much does Spark Plug Replacement cost in Placentia?

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

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2012 Volkswagen Jetta $138 $57.52 $79.99 16% $165.02
2004 Chevrolet Silverado 3500 $10089 $9928.88 $159.98 0% $10143.88
2010 Ford Fusion $135 $54.64 $79.99 16% $162.14
2014 Audi Q5 $215 $134.58 $79.99 11% $242.08
2014 Audi A8 Quattro $311 $134.58 $175.97 16% $371.08
2010 Mercedes-Benz SLK55 AMG $500 $276.42 $223.97 13% $577.42

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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.

Fast and easy service at your home or office

GET A QUOTE FOR YOUR CAR

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