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Spark Plug Tester, Adjustable Ignition Coil Tester System, Coil Pack Tester, Spark Testers Tool, Spark Checker, Autos Diagnostic Test Tool for Automotive, Small Engines, Lawnmowers

  • Based on 380 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, Aug 14
Order within 9 hours and 2 minutes
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Size: 1 PC


Features

  • Pitch Adjustment Function: The spark plugs tester is equipped with a pitch adjustment valve and a round knob, which can adjust the observation pitch of the spark plugs according to the needs of different car models, and at the same time can effectively avoid the occurrence of misfire and burnt ignition coils
  • Quality Materials: The use of metal connectors to ensure durability and excellent electrical conductivity, to ensure that the current transmission between the inline spark plug tester and the spark plug is stable and efficient, to improve the accuracy of the test
  • High Visibility Design: The spark tester for small engine's viewing area scale values are in white font, making it easy to read the scale clearly when measuring gap values from 0 to 40k, even in bright light conditions. This high visibility design enhances ease of operation and accuracy
  • How to Use: This ignition coil tester tool is equipped with rubber-coated ground wire, grounding alligator clips and springs for safe and stable introduction of high voltage current. To use, attach the alligator clip to the engine, connect the other end to the spark plug wire and check the spark length through the small window. The longer the spark gap, the stronger the coil
  • Widely Applicable: The spark tester has an overall length of 4.5 inches, a cable length of 19.7 inches and a diameter of 0.92 inches. Designed to ensure compatibility with a wide range of automotive ignition systems, it is an ideal tool for automotive maintenance, small engine inspections, ignition coil testing, and lawn mower maintenance

Description

We are committed to providing car owners with high-quality, reliable auto parts to enhance the driving experience. how do i know if my ignition coil is producing 30,000 volts or 60,000 volts? By the length of the arc you can get across see more Does the tip where the spark plug boot attaches unscrew to expose threads for other types of spark plug boots? This tester does have a detachable tip which will enable you to put it in a spark plug holder of your choice

Brand: ecocstm


Power Source: Corded Electric


Style: Compact


Item Weight: 2.4 ounces


Unit Count: 1.0 Count


Power Source: Corded Electric


Compatible Devices: Cars, lawnmowers, small engines


Style Name: Compact


Item Weight: 2.4 ounces


Brand Name: ecocstm


Manufacturer: ecocstm


Part Number: ecocstm-SPT-01


Unit Count: 1.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Aug 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • works great
Size: 1 PC
Good product works as designed
Reviewed in the United States on May 13, 2026 by Lwash

  • Nice tool
Size: 1 PC
Works Great. I added a longer spring to hold the adjustment at large gaps.
Reviewed in the United States on June 30, 2026 by Robert H Quimby

  • Good quality
Size: 1 PC
Excellent
Reviewed in the United States on May 22, 2026 by Isaac Portocarrero

  • Great value, good design and manufacturing
Size: 2 PCS
Housing is substantial, well made and a good design, though has some mold parting lines exist along the length of the body both sides and end - took a file and smoothed them off. Threads for adjusting the spark gap on the gap set are well done - though would have preferred a brass design. The markings on the body don’t do anything for me. Just a reference point. I set a gap using a drill bit and leave it. I did add an oring to the shaft to help the screw from accidentally being changed once a setting has been made. Wire length is sufficient for any small engine. Insulation on the wire and clamp boot are great material - Very flexible. Wire clamp has nice teeth and holds secure for a good ground. However the wire insulation was not stripped and soldered for attachment. The wire was inserted into the clamp with insulation and staked. My ohm meter showed continuity, so cheap but effective manufacturing. The spark plug electrode appears to be a brass alloy with the shaft molded into the housing and well machined. In the end is a pressed in piece to connect to the spark plug and is free to rotate. For the price a great buy - I bought two. I am sure a friend will want one. ... show more
Reviewed in the United States on July 12, 2025 by Average user

  • Useful diagnostic tool
Size: 1 PC
Tells you if you're getting spark or not. Not much to it.
Reviewed in the United States on June 28, 2026 by Squyres and Company

  • Easy to use and effective.
Size: 1 PC
This is a simple and effective tool for testing ignition coils. It helped me identify that older coils did need to be replaced and in a separate situation quickly identify a coil failure.
Reviewed in the United States on May 6, 2026 by jonnyz2

  • Excellent all around and multi-use spark tester
Size: 1 PC
I like the dark body (easy to see spark), the adjustability, and how it is flexible for testing everything from a chainsaw to a vehicle. I like being able to see how strong the spark is rather than just that it has spark. Makes it easy to quantify how much improvement is gained from electronic ignition upgrades, etc. ... show more
Reviewed in the United States on July 6, 2026 by MamaOf4

  • Cheap wat to tell if spark is present or not
Size: 1 PC
Did help to see if a spark is oresent but not how intense.
Reviewed in the United States on April 9, 2026 by R.G.

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