Jeep J20 Spark Plug Replacement at your home or office.

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Spark Plug Replacement Estimate for Jeep J20

Jeep J20 Spark Plug Replacement costs $73 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$73 to $83
Labor: $70 -$80
Parts: $3
Average Dealer price
$99
Average Shop price
$87
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Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
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CarServiceEstimateShop/Dealer Price
1978 Jeep J20V8-6.6LService typeSpark Plug ReplacementEstimate$75.48Shop/Dealer Price$91.37 - $106.37
1979 Jeep J20V8-5.9LService typeSpark Plug ReplacementEstimate$76.00Shop/Dealer Price$92.09 - $107.53
1980 Jeep J20V8-5.9LService typeSpark Plug ReplacementEstimate$76.00Shop/Dealer Price$92.04 - $107.45
1974 Jeep J20V8-6.6LService typeSpark Plug ReplacementEstimate$75.48Shop/Dealer Price$91.41 - $106.45
1974 Jeep J20L6-4.2LService typeSpark Plug ReplacementEstimate$75.48Shop/Dealer Price$91.38 - $106.39
1982 Jeep J20V8-5.9LService typeSpark Plug ReplacementEstimate$75.96Shop/Dealer Price$91.97 - $107.32
1976 Jeep J20V8-6.6LService typeSpark Plug ReplacementEstimate$75.48Shop/Dealer Price$91.46 - $106.52
1976 Jeep J20L6-4.2LService typeSpark Plug ReplacementEstimate$75.48Shop/Dealer Price$91.44 - $106.48
Show example Jeep J20 Spark Plug Replacement prices

Spark Plug Replacement Service & Cost

What are the 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

Keep in mind:

  • 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.

How it's done:

  • 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.

Our recommendation:

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 this service?

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.

Fast and easy Spark Plug Replacement service at your home or office.

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Jeep Repair

Average Rating

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Number of Reviews

2,459

Rating Summary
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Meet some of our expert Jeep mechanics

Real customer reviews from Jeep owners like you.

Peter

39 years of experience
789 reviews
Peter
39 years of experience
Honestly
2006 JEEP LIBERTY - SPARK PLUGS - GLENDALE, ARIZONA

Rodney

32 years of experience
296 reviews
Rodney
32 years of experience
Rodney is very professional, prompt and knowledgeable. I will definitely be using him again.
2010 JEEP PATRIOT - SPARK PLUGS - CITRUS HEIGHTS, CALIFORNIA

Yahshif

6 years of experience
108 reviews
Yahshif
6 years of experience
He was on time, clean, he did not leave any signs of work or debris, he was fast and courteous. Highly recommended.
2003 JEEP LIBERTY - SPARK PLUGS - INGLEWOOD, CALIFORNIA

Danny

16 years of experience
21 reviews
Danny
16 years of experience
Had an appointment for 1115am, and Danny was roughly 20 minutes early which was great. Service was done in a timely manner, and was very clean. Absolutely would recommend, and be a repeat customer.
2011 JEEP COMPASS - SPARK PLUGS - METHUEN, MASSACHUSETTS
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
1978 Jeep J20V8-6.6LService typeSpark Plug ReplacementEstimate$75.48Shop/Dealer Price$91.37 - $106.37
1979 Jeep J20V8-5.9LService typeSpark Plug ReplacementEstimate$76.00Shop/Dealer Price$92.09 - $107.53
1980 Jeep J20V8-5.9LService typeSpark Plug ReplacementEstimate$76.00Shop/Dealer Price$92.04 - $107.45
1974 Jeep J20V8-6.6LService typeSpark Plug ReplacementEstimate$75.48Shop/Dealer Price$91.41 - $106.45
1974 Jeep J20L6-4.2LService typeSpark Plug ReplacementEstimate$75.48Shop/Dealer Price$91.38 - $106.39
1982 Jeep J20V8-5.9LService typeSpark Plug ReplacementEstimate$75.96Shop/Dealer Price$91.97 - $107.32
1976 Jeep J20V8-6.6LService typeSpark Plug ReplacementEstimate$75.48Shop/Dealer Price$91.46 - $106.52
1976 Jeep J20L6-4.2LService typeSpark Plug ReplacementEstimate$75.48Shop/Dealer Price$91.44 - $106.48
Show example Jeep J20 Spark Plug Replacement prices

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