Spark Plug Replacement at your home or office in Liberty.

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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 Liberty

Excellent Rating


YourMechanic Spark Plug Replacement Service

Average Rating

4.9/5

Number of Reviews

3,613

Rating Summary
3,401
127
16
15
54
3,401
127
16
15
54

Ruben

21 years of experience
115 reviews
Ruben
21 years of experience
Ruben showed up on time and completed a lengthy amount of service pretty quickly.
Pleasant very grateful

Brandon

16 years of experience
318 reviews
Brandon
16 years of experience
Brandon was an excellent, personable and professional mechanic who showed up early and got the job done in record time. He was even kind enough to ride along with me on a test drive to ensure the car worked properly after the service. I would recommend Brandon to anyone as he's the first mechanic I've ever had who hasn't tried to upsell me on services or rip me off. Five stars and thank you for being awesome!

Tyrone

9 years of experience
422 reviews
Tyrone
9 years of experience
Very helpful and informative. Pleasant and friendly. Will definitely use him again .

Clifton

28 years of experience
197 reviews
Clifton
28 years of experience
Clifton is an absolutely ideal choice for a mechanic. He arrived on time, was very friendly, and took care fixing everything that was needed. He explained things to be, answered my questions, and really did a top-notch job with the car. There is no question he has been doing this for a long time, he really knows what he is doing. I would recommend him to anyone I know!

Patrick

31 years of experience
1053 reviews
Patrick
31 years of experience
AWESOME. KNOWLEDGEABLE.

Michael

12 years of experience
57 reviews
Michael
12 years of experience
I look forward to Michael’s future services for all our vehicles needs. I will highly recommend him as many friends and families as I can. Very knowledgeable and very professional.

Eric

13 years of experience
125 reviews
Eric
13 years of experience
Punctual and very friendly....

Eric

10 years of experience
230 reviews
Eric
10 years of experience
Great Guy. Had the spark plugs done. Had some mix-ups with appointment time but that was due to bad, rainy weather but nothing can be changed about that. Overall great experience and would love to have him out to do more work for me. I would recommend him to anyone

Paul

23 years of experience
207 reviews
Paul
23 years of experience
Timely service!

Jose

13 years of experience
249 reviews
Jose
13 years of experience
Jose was on time and came to look at the car even though it was raining ropes. He took the time to ask some questions and properly diagnosed what what wrong with the car. I had ran out of gas and after putting gas in the car it still would not start. Some online recommendations were that I had burned my fuel pump and needed a new one , or my fuel filter etc etc because of debris left at the bottom of the fuel tank... before you know it, I was looking at over $500 worth of repair , not to mention that I would have to tow the car to the next repair shop. Within 35 minutes, Jose had figured out what was wrong and I was on my way. He even stayed in the parking lot (where he came to fix my car) to make sure that I was ok . It feels good to know that not everyone is out there trying to scam you. I am a customer for life now, so is my wife and all my employees. I highly recomend Jose !! I could keep typing for another 10 minutes but I don't want to embarrass him . When you book him you will understand.


How much does Spark Plug Replacement cost in Liberty?

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

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2005 Subaru Baja $330 $89.72 $239.97 20% $412.22
2009 Ford Fusion $287 $110.80 $175.97 17% $347.30
2008 Chevrolet Avalanche $353 $208.67 $143.98 12% $402.17
2013 BMW 328i xDrive $208 $96.00 $111.98 15% $246.50
2008 Audi Q7 $343 $239.20 $103.98 9% $378.95
2009 Porsche Cayenne $231 $134.58 $95.98 12% $263.58

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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