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Spark Plugs

What are the Symptoms of a Bad Spark Plug?

Diagnosing a bad spark plug can be difficult, as it usually shares symptoms with many other potential problems, but there are some things you can look for.

- Higher than Normal Fuel Consumption

- Lack of Power When Accelerating

- Engine Idles Roughly or Struggles to Start

- Engine Sputters or Misfires While Accelerating

While a vehicle is running, each spark plug in the engine is firing hundreds to thousands of times per minute. Over time, this wears on the plug, leaving it potentially unable to create a spark. There are a few different types of spark plugs, including copper, platinum, and iridium. The lifespans of each can vary greatly. Generally, standard copper plugs will last around 35,000 km, with platinum plugs lasting around 100,000 km, and iridium plugs lasting up to 150,000 km.

A bad spark plug could mean that the engine has cylinders that are not firing, causing it to sputter and run poorly. This greatly affects the vehicle’s efficiency and performance.

It is generally recommended that you replace spark plugs with those made by the vehicle’s original parts manufacturer. Often times this means AC Delco for GM engines, Autolite for Ford engines, Champion for Chrysler engines, and NGK or Denso for Asian makes. Consult your vehicle’s owner’s manual for recommended spark plug replacement specifications.

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Popular Spark Plugs

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NGK 5464 product image
$13.85
50+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
Pick-Up: Available Immediately
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Made in Japan
$6.16
10+ In Stock
Condition: New
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Autolite 4092 product image
$3.18
Limited Stock
Condition: New
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NGK 4469 product image
$13.65
50+ In Stock
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Ships: Wednesday Feb. 11th
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Made in Japan
NGK 93175 product image
$11.24
50+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
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Made in Japan
NGK 2288 product image
$9.95
10+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
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Made in Japan
NGK 96355 product image
$15.53
10+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
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Made in Japan
Bosch 6737 product image
$6.39
10+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
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NGK 90909 product image
$23.54
50+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
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Made in Japan
Bosch 7905 product image
$3.78
10+ In Stock
Condition: New
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NGK 93560 product image
$27.59
10+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
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Made in Japan
NGK 94122 product image
$17.51
10+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
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Made in Japan
NGK 92400 product image
$18.75
50+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
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Made in Japan
NGK 6509 product image
$13.85
50+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
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Made in Japan
NGK 95660 product image
$23.01
10+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
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Made in Japan
$19.12
10+ In Stock
Condition: New
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NGK 94833 product image
$17.25
50+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
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Made in Japan
NGK 92274 product image
$18.76
50+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
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Made in Japan
NGK 94124 product image
$22.91
50+ In Stock
Condition: New
Ships: Wednesday Feb. 11th
Pick-Up: Available Immediately
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Made in Japan
Bosch 7434 product image
$16.10
In Stock
Condition: New
Ships: Wednesday Feb. 11th
Pick-Up: Available Immediately
Spark Plug
Made in Germany