Spark Plug Replacement at your home or office in Sunnyvale.

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Average rating from customers who
received a Spark Plugs Replacement.
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$96.47 - $648.09

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 Sunnyvale

Excellent Rating


YourMechanic Spark Plug Replacement Service in Sunnyvale

Average Rating

5/5

Number of Reviews

12

Rating Summary
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Amor

41 years of experience
181 reviews
Amor
41 years of experience
I have owned well over 300 cars and at one time owned a repair shop. I am now highly allergic to automotive grease, oil, brake fluid and grime. Amor has serious car knowledge in addition to technician skills. I will use him again and highly recommend him. I really like your concept as I don't lose the use of my car all day. It is extremely convenient.

Whitney

37 years of experience
783 reviews
Whitney
37 years of experience
Details,professional,and most importantly he fixed the issues as he promised.
We were very pleased with Whitney's performance and professionalism. We will definitely use Whitney for all our car needs.

Honorio

17 years of experience
742 reviews
Honorio
17 years of experience
Will ask for Honorio next time I have a problem. I had to work when the appointment was scheduled gave him the spar and he did an amazing job.
My bmw 325i failed the smog check and there was a engine cylinder 4 misfire. Honorio did an excellent job of fixing both spark plug and coil and immediately huge difference in the engine idling,no vibrations.. He also gave me v good advice to run car for atleast 100 miles as smog detection would not get faulty old code. I had a nice relaxing afternoon sitting by pool and thank Honorio for fixing the car. Total cost $350.00

Robert

29 years of experience
567 reviews
Robert
29 years of experience
Very quick and extremely knowledgeable, took the time to walk me through the planned repairs and why my ignition was failing. Up and running fot a 3rd of the cost a shop would start to charge me.
Very good.

Mark

9 years of experience
349 reviews
Mark
9 years of experience

ALEX

21 years of experience
43 reviews
ALEX
21 years of experience
Excellent work. Would recommend Alex highly.

Terris

17 years of experience
15 reviews
Terris
17 years of experience
Terris was very professional answering all my questions and did a thorough job

Ben

39 years of experience
1085 reviews
Ben
39 years of experience
Ben showed up right on time and finished in a timely manner. He also explained and showed me the condition of my old spark plugs. Overall Ben did a great job. Thanks Ben and Thanks YourMechanic.com!

Shaun

19 years of experience
204 reviews
Shaun
19 years of experience
THIS IS MY SECOND JOB WITH SHAUN. THIS MECHANIC IS FANTASTIC 10 PLUS EASY. REAL PRO. VERY ORGANIZED DETAILED WITH EXCELLENT CUSTOMER SERVICE. HE IS MANAGERIAL MATERIAL FOR SURE. PUNCTUAL POLITE CLEAN VERY EXPERIENCED. NO JEEP DEALER WOULD COME NEAR HIS QUALITY/CHARACTERISTIC PROFESSIONALISM. I MADE A GREAT CHOICE NOW ITS UP TO YOU. STEVE OF WALNUT CREEK

Travis

10 years of experience
165 reviews
Travis
10 years of experience
Travis really did a great job and didn't mind explaining if I had questions, hope to be able to have him as my mechanic if needed in the future


How much does Spark Plug Replacement cost in Sunnyvale?

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

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2011 Nissan Pathfinder $370 $265.84 $103.98 8% $405.59
2008 Nissan Maxima $430 $229.74 $199.97 13% $498.49
2013 Dodge Dart $140 $60.40 $79.99 16% $167.90
2011 Mini Cooper $201 $104.92 $95.98 14% $233.92
2007 Infiniti M45 $266 $186.00 $79.99 9% $293.50
2010 Lexus IS F $534 $390.47 $143.98 8% $583.97

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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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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