Spark Plug Replacement at your home or office in Concord.

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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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Average rating from customers who
received a Spark Plugs Replacement.
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Recent Spark Plug Replacement reviews in Concord

Excellent Rating


YourMechanic Spark Plug Replacement Service

Average Rating

4.9/5

Number of Reviews

3,580

Rating Summary
3,368
127
16
15
54
3,368
127
16
15
54

Jeffrey

25 years of experience
839 reviews
Jeffrey
25 years of experience
Our new mechanic for life!!! Very honest and great guy!!

Harish

25 years of experience
588 reviews
Harish
25 years of experience
Harish was very knowledgeable and willing to explain in detail everything that was done.

Jimmy

27 years of experience
186 reviews
Jimmy
27 years of experience
Met my expectations. I would definitely recommend this mechanic to everyone I know. I'm in the process of booking this mechanic for more work. Most of all he was humble.

Jason

15 years of experience
429 reviews
Jason
15 years of experience
This Timing belt and spark plug replacement for a Mitsubishi V6 SUV is a hard job. Jason knew what he was doing and was methodical and deliberate. He also has the experience with the newer pollution plumbing that was in the engine bay. Very professional, fully equipped and patient. Things can go wrong with tough jobs and a mechanic with little or no patience can get sloppy. Jason was not so the tough job was done well. To future customers: If the mechanic is going to be on the job for a while (and you feel like he's a decent person), offer snacks, a small meal, something to drink. It just establishes goodwill between you and the mechanic. Treat them well and hopefully, they reciprocate by doing the best they can for you.

Nathaniel

20 years of experience
27 reviews
Nathaniel
20 years of experience

Henry

32 years of experience
137 reviews
Henry
32 years of experience
Henry was wonderful! He messaged to keep me in the loop as to when he would be there, and ended up staying late to make sure my car was fixed so I could get to work the next morning. So appreciated!! Would absolutely use Henry again

David

11 years of experience
253 reviews
David
11 years of experience
Awesome dude! Thanks a bunch!

Brandon

16 years of experience
272 reviews
Brandon
16 years of experience
Great knowledgeable mechanic. Goes the extra step, leaves driveway clean, very friendly.

David

12 years of experience
66 reviews
David
12 years of experience
I enjoy having my cars fixed at my home, where I can get comfortable while the mechanic is fixing my car. I think your mechanic is the best thing since sliced apple pie. I have family that need their cars fixed. I will recommend your mechanic and David to my family and friends. Thanks David!

Joseph

31 years of experience
540 reviews
Joseph
31 years of experience
He did exactly as requested regarding the repair.He was on time, did the job requested, gave great info after, so great mechanic, but to come across more personable on future visits would suggest maybe a little more gab (talk so "us" not as knowledgeable folks so we can know what your thinking.)


How much does Spark Plug Replacement cost in Concord?

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

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2005 Volkswagen Touareg $384 $239.81 $143.98 11% $433.31
2014 Subaru Tribeca $396 $163.66 $231.97 16% $475.41
2004 Subaru Baja $330 $89.72 $239.97 20% $412.22
2007 Cadillac DTS $362 $194.38 $167.97 13% $420.13
2008 Cadillac DTS $362 $194.38 $167.97 13% $420.13
2007 Porsche 911 $582 $94.26 $487.93 22% $750.01

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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