Spark Plug Replacement at your home or office in Morgan Hill.

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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 Morgan Hill

Excellent Rating


YourMechanic Spark Plug Replacement Service in Morgan Hill

Average Rating

4.8/5

Number of Reviews

5

Rating Summary
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4
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Trung

10 years of experience
406 reviews
Trung
10 years of experience
He was very knowledgeable
Trung was on time, friendly, went above and beyond what was asked for and showed me the condition of the old parts. Very happy!

Peter

41 years of experience
1235 reviews
Peter
41 years of experience
Professional, experienced, and great customer service. Highly recommend Peter and well definitely send referrals to him.
Once again Pete was outstanding! He was early and finshed the job in no time at all. We will continue to use Pete whenever we have a car problem! He's part of our family now! Thanks again Pete!

Dave

21 years of experience
303 reviews
Dave
21 years of experience
As expected, very good!

Erick

8 years of experience
182 reviews
Erick
8 years of experience
Fantastic Service.

Jason

15 years of experience
429 reviews
Jason
15 years of experience
It was my first time using Your Mechanics and it won’t be the last because of Jason’s excellent service. Jason called me before the visit to recommend using a different brand of spark plugs to save a decent chunk of money (ngk vs denco). During his visit, I was in and out of the garage but while, Jason clearly explained what he was doing. Definitely not for everyone but I rather enjoyed learning about my own car instead of being completely in the dark during regular garage visits. There was a quirk in how my car readjusts idle control after the spark plugs are changed. Jason stuck around for an extra hour until he figured it out (answer: disconnect battery for 10min). I felt comfortable through out the process. Highly recommend Jason.

Jerimiah

17 years of experience
326 reviews
Jerimiah
17 years of experience
Very happy with the work project results!

Charles

15 years of experience
176 reviews
Charles
15 years of experience
He was right on time, knew what he was doing and got the job done! One of the best car service experiences I have had.

Cameron

12 years of experience
93 reviews
Cameron
12 years of experience
Very friendly, courteous and knowledgeable. Would recommend highly!

Isai

25 years of experience
230 reviews
Isai
25 years of experience
Second time working with him and I haven't been disappointed at all. He's great.

Jerome

22 years of experience
414 reviews
Jerome
22 years of experience
Jerome communicated well by contacting me beforehand. He arrived on time. Finished the job in a timely manner and was very professional. I enjoyed doing business with him and will continue to do so moving forward.


How much does Spark Plug Replacement cost in Morgan Hill?

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

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2011 GMC Sierra 2500 HD $272 $127.79 $143.98 15% $321.29
2005 Honda Accord $182 $102.48 $79.99 13% $209.98
2013 Bugatti Veyron 16.4 $489 $345.12 $143.98 9% $538.62
2015 BMW 535i xDrive $243 $123.36 $119.98 14% $284.61
2010 Audi TT Quattro $200 $87.68 $111.98 16% $238.18
2005 Jaguar XJ8 $188 $68.24 $119.98 17% $229.49

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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

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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