Cadillac DeVille Spark Plug Replacement

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Spark Plug Replacement Estimate for Cadillac DeVille

Cadillac DeVille Spark Plug Replacement costs $116 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$73 to $277
Labor: $70 -$189
Parts: $3 -$88
Average Dealer price
$103 to 379
Average Shop price
$90 to 292
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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
2002 Cadillac DeVilleV8-4.6LService typeSpark Plug ReplacementEstimate$238.14Shop/Dealer Price$313.04 - $420.48
1979 Cadillac DeVilleV8-5.7L DieselService typeSpark Plug ReplacementEstimate$129.40Shop/Dealer Price$164.01 - $217.76
1974 Cadillac DeVilleV8-7.7LService typeSpark Plug ReplacementEstimate$86.30Shop/Dealer Price$112.25 - $135.26
1997 Cadillac DeVilleV8-4.6LService typeSpark Plug ReplacementEstimate$323.80Shop/Dealer Price$426.51 - $602.99
1999 Cadillac DeVilleV8-4.6LService typeSpark Plug ReplacementEstimate$323.80Shop/Dealer Price$415.84 - $584.32
1991 Cadillac DeVilleV8-4.9LService typeSpark Plug ReplacementEstimate$87.26Shop/Dealer Price$110.97 - $138.47
1973 Cadillac DeVilleV8-7.7LService typeSpark Plug ReplacementEstimate$76.30Shop/Dealer Price$97.75 - $117.38
1987 Cadillac DeVilleV8-4.1LService typeSpark Plug ReplacementEstimate$76.46Shop/Dealer Price$100.11 - $121.48
Show example Cadillac DeVille Spark Plug Replacement prices

Spark Plug Replacement Service & Cost

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.

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

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Excellent Rating


YourMechanic Cadillac DeVille Spark Plugs Replacement Service

Average Rating

4.8/5

Number of Reviews

13

Rating Summary
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Meet some of our expert Cadillac mechanics

Real customer reviews from Cadillac owners like you.

Michael

36 years of experience
129 reviews
Michael
36 years of experience
He is wonderful. Very knowledgeable and honest. I would recommend him anytime. How ever when trying to book a part that was under warranty I had to deal with your customer service department on the phone. I was less then impressed with how I was treated and the service there is less then steller . I t would be the only reason I would not recommend this company. If Michael wasn't so great I would drop using your company.
2003 CADILLAC DEVILLE - SPARK PLUGS - COLUMBUS, OHIO

Richard

7 years of experience
310 reviews
Richard
7 years of experience
Arrived on time and provided expert advice. I was extremely pleased with Richard's feedback and professionalism and happy to have him service my car the next time a service is due. Many thanks!
1998 CADILLAC DEVILLE - SPARK PLUGS - BOWIE, MARYLAND

Neal

8 years of experience
20 reviews
Neal
8 years of experience
Neil was very professional - new exactly what the problem was and fixed the problem - I would definitely recommend "Your Mechanic" to any friends and relatives that are having problems with their car - Gary from Palm Harbor
2003 CADILLAC DEVILLE - SPARK PLUGS - PALM HARBOR, FLORIDA
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
2002 Cadillac DeVilleV8-4.6LService typeSpark Plug ReplacementEstimate$238.14Shop/Dealer Price$313.04 - $420.48
1979 Cadillac DeVilleV8-5.7L DieselService typeSpark Plug ReplacementEstimate$129.40Shop/Dealer Price$164.01 - $217.76
1974 Cadillac DeVilleV8-7.7LService typeSpark Plug ReplacementEstimate$86.30Shop/Dealer Price$112.25 - $135.26
1997 Cadillac DeVilleV8-4.6LService typeSpark Plug ReplacementEstimate$323.80Shop/Dealer Price$426.51 - $602.99
1999 Cadillac DeVilleV8-4.6LService typeSpark Plug ReplacementEstimate$323.80Shop/Dealer Price$415.84 - $584.32
1991 Cadillac DeVilleV8-4.9LService typeSpark Plug ReplacementEstimate$87.26Shop/Dealer Price$110.97 - $138.47
1973 Cadillac DeVilleV8-7.7LService typeSpark Plug ReplacementEstimate$76.30Shop/Dealer Price$97.75 - $117.38
1987 Cadillac DeVilleV8-4.1LService typeSpark Plug ReplacementEstimate$76.46Shop/Dealer Price$100.11 - $121.48
Show example Cadillac DeVille Spark Plug Replacement prices

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