Toyota 4Runner Spark Plug Replacement at your home or office.

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Spark Plug Replacement Estimate for Toyota 4Runner

Toyota 4Runner Spark Plug Replacement costs $118 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$81 to $166
Labor: $70 -$80
Parts: $11 -$86
Average Dealer price
$119 to 268
Average Shop price
$100 to 193
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceEstimateShop/Dealer Price
2010 Toyota 4RunnerV6-4.0LService typeSpark Plug ReplacementEstimate$188.32Shop/Dealer Price$232.08 - $331.46
1985 Toyota 4RunnerL4-2.4LService typeSpark Plug ReplacementEstimate$105.84Shop/Dealer Price$125.02 - $153.94
1999 Toyota 4RunnerV6-3.4LService typeSpark Plug ReplacementEstimate$245.72Shop/Dealer Price$301.08 - $435.82
1997 Toyota 4RunnerV6-3.4LService typeSpark Plug ReplacementEstimate$124.36Shop/Dealer Price$153.87 - $206.58
1991 Toyota 4RunnerV6-3.0LService typeSpark Plug ReplacementEstimate$108.76Shop/Dealer Price$131.47 - $170.30
2005 Toyota 4RunnerV8-4.7LService typeSpark Plug ReplacementEstimate$241.68Shop/Dealer Price$295.68 - $432.76
1990 Toyota 4RunnerV6-3.0LService typeSpark Plug ReplacementEstimate$108.76Shop/Dealer Price$132.05 - $171.33
1986 Toyota 4RunnerL4-2.4L TurboService typeSpark Plug ReplacementEstimate$92.72Shop/Dealer Price$110.99 - $137.48
Show example Toyota 4Runner Spark Plug Replacement prices

Service

What are spark plugs all about?

The spark plugs are an important part of the ignition system. When you turn the ignition key (car's key) on, it causes the ignition coil to generate the spark which ignites the air-fuel mixture in the engine cylinders to start the engine. The number of spark plugs in the car is the same as the number of cylinders, although some vehicle manufacturers will use two spark plugs per cylinder.

Over time, the spark plugs wear out and require replacement. When the spark plugs wear out, it is harder for it the air-fuel mixture to ignite, resulting in engine misfires. If one of the spark plugs has failed, the car will still start and run, but it will run poorly. On some vehicles, spark plug replacement may be labor intensive and involve removal of the intake plenum.

Spark plugs-MATROX-1

While replacing spark plugs remember

  • When the spark plugs are replaced, it is a good idea to inspect the ignition cables as well.
  • Spark plugs come in numerous ratings, and the correct rating for your vehicle should always be used.

Steps for replacing spark plugs

  • Scan the car for codes.
  • Clean all surface areas around the spark plugs.
  • Remove spark plugs.
  • Inspect threads in engine head (where plugs are installed).
  • Perform compression test if needed.
  • Inspect ignition wires.
  • Apply anti-seize to the threads of the spark plugs.
  • Install new spark plugs.
  • If needed replace any gaskets removed.

When to replace spark plugs

During routine maintenance and checkups, your ignition system should always be inspected. Any time that a component of the ignition system is replaced, it’s a good idea to consider replacing the spark plugs as well. If you don’t preemptively change your spark plugs your engine will let you know by misfiring or running poorly, so schedule an inspection as soon as you notice that your engine is not performing properly.

What common symptoms indicate you may need to replace the Spark Plugs?

  • Check Engine light is on.
  • Engine misfires.
  • Poor fuel economy.
  • Vibration coming from the engine.

How important is it to replace the spark plugs?

Spark plugs are responsible for igniting the fuel that your engine uses to run. When you turn your key, a small voltage of power is sent to the ignition coil, where it is transformed into high voltage currency. This high voltage currency is sent through the ignition cables to the spark plugs. The spark plugs use the power to create a spark, which ignites the fuel, and allows the engine to function.

When the spark plugs malfunction, this spark won’t be created, and the fuel will not be ignited as it should. Your vehicle has many spark plugs, so depending on how many fail, your engine may either run poorly, or not run at all. Continuing to drive a vehicle with malfunctioning spark plugs can also cause damage to the catalytic converter.

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Excellent Rating


YourMechanic Toyota 4Runner Spark Plugs Replacement Service

Average Rating

4.8/5

Number of Reviews

26

Rating Summary
25
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Meet some of our expert Toyota mechanics

Real customer reviews from Toyota owners like you.

Dellano

15 years of experience
210 reviews
Dellano
15 years of experience
I had a few jobs that needed doing on the car: new plugs, pcv valve and air/fuel sensors. The price was amazing so I booked an appointment with Dellano. He showed up on time, got the job done and left. Simple! Dellano was professional and friendly and I'll definitely make another appointment when I need more work done.
2004 TOYOTA 4RUNNER - SPARK PLUGS - ARLINGTON, VIRGINIA

Theodore

13 years of experience
726 reviews
Theodore
13 years of experience
Theodore was very professional. He diagnosed what I thought was a more expensive repair as just needing new spark plugs. He was courteous and efficient. Overall a great experience.
2004 TOYOTA 4RUNNER - SPARK PLUGS - REDMOND, WASHINGTON

Jeffrey

24 years of experience
624 reviews
Jeffrey
24 years of experience
Jeffrey is professional, knowledgeable & gets the job done. This is the second time he has serviced my car... I have finally found a mechanic I trust!
2000 TOYOTA 4RUNNER - SPARK PLUGS - CHARLOTTE, NORTH CAROLINA

Jose

14 years of experience
433 reviews
Jose
14 years of experience
Jose is a super friendly guy and is incredibly knowledgable. I'm a bit of an idiot with cars, so he always kindly explains what work he's doing and why it's necessary. I go out of my way to make sure Jose is available to do the work on my car.
2002 TOYOTA 4RUNNER - SPARK PLUGS - PORTLAND, OREGON
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceEstimateShop/Dealer Price
2010 Toyota 4RunnerV6-4.0LService typeSpark Plug ReplacementEstimate$188.32Shop/Dealer Price$232.08 - $331.46
1985 Toyota 4RunnerL4-2.4LService typeSpark Plug ReplacementEstimate$105.84Shop/Dealer Price$125.02 - $153.94
1999 Toyota 4RunnerV6-3.4LService typeSpark Plug ReplacementEstimate$245.72Shop/Dealer Price$301.08 - $435.82
1997 Toyota 4RunnerV6-3.4LService typeSpark Plug ReplacementEstimate$124.36Shop/Dealer Price$153.87 - $206.58
1991 Toyota 4RunnerV6-3.0LService typeSpark Plug ReplacementEstimate$108.76Shop/Dealer Price$131.47 - $170.30
2005 Toyota 4RunnerV8-4.7LService typeSpark Plug ReplacementEstimate$241.68Shop/Dealer Price$295.68 - $432.76
1990 Toyota 4RunnerV6-3.0LService typeSpark Plug ReplacementEstimate$108.76Shop/Dealer Price$132.05 - $171.33
1986 Toyota 4RunnerL4-2.4L TurboService typeSpark Plug ReplacementEstimate$92.72Shop/Dealer Price$110.99 - $137.48
Show example Toyota 4Runner Spark Plug Replacement prices

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