Spark Plug Replacement at your home or office in Lake Oswego.

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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 Lake Oswego

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

Harish

25 years of experience
588 reviews
Harish
25 years of experience
Very professional. I thought my spark plug change was going to take about 1 hour because of the cramped place. Harish was done in about 15 mins. I am throughly impressed with Harish!!!!!
job very well done on time and for me even better 30 minutes early harish is the man who cares about what he does thanks George p

Justin

6 years of experience
40 reviews
Justin
6 years of experience
Extremely professional and friendly. Did a great job and communicated openly during the project. Would use Justin again.

Kingsley

12 years of experience
28 reviews
Kingsley
12 years of experience
Kingsleys was very attentive and knowledgable. He communicated through the process and was very thorough. I appreciate all he hard work and kindness. We will be having him work on our cars again 

Keith

24 years of experience
229 reviews
Keith
24 years of experience
He showed up early. Got the work done well before the estimated time frame and made sure I was kept aware of everything that was going on and things that needed looking into. Was very approachable with questions and his answers made sense.

ROBERT

15 years of experience
27 reviews
ROBERT
15 years of experience
Robert is awesome. Wouldn’t use anyone else.

Ben

27 years of experience
59 reviews
Ben
27 years of experience
Ben is knowledgeable, funny, and answers any questions I have about my vehicle in terms I am able to understand. Ben is just awesome.

Jeffrey

25 years of experience
839 reviews
Jeffrey
25 years of experience
I was absolutely satisfied with Jeffrey's service. Very nice Guy who knows what he's doing. Got right to the problem with no second guessing. Outstanding!

Scott

34 years of experience
595 reviews
Scott
34 years of experience
scott was on time as usual. in and out with a great job.

Joseph

22 years of experience
44 reviews
Joseph
22 years of experience
Very friendly, let me watch as he performed the maintenance. Job was done in under 45 minutes which was fantastic. He even stuck around to let me test out the car, to make sure my misfire issue was alleviated.

Joe

13 years of experience
358 reviews
Joe
13 years of experience
Joe was very knowledgeable and professional. I hope I can book him the next time I need work done on my car.


How much does Spark Plug Replacement cost in Lake Oswego?

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

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2011 Honda CR-Z $288 $167.92 $119.98 12% $329.17
2005 Mazda RX-8 $146 $66.46 $79.99 15% $173.96
2008 Nissan Altima $193 $112.96 $79.99 12% $220.46
2012 Mercedes-Benz SLK350 $272 $152.10 $119.98 13% $313.35
2013 Mercedes-Benz S350 $431 $286.98 $143.98 10% $480.48
2014 Porsche Panamera $332 $251.88 $79.99 7% $359.38

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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