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Lisle 20610 Inline Spark Tester, One Size, Factory

4.7 4.7 out of 5 stars 6,029 ratings

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Inline Spark Tester

Purchase options and add-ons

Brand Lisle
Power Source Hand Powered
Style Inline Spark Tester
Color Factory
Item Weight 4 ounces

About this item

  • Gives a Visual Check of the Ignition System.
  • Quickly diagnose problems with all ignition systems. Connect the tool between the spark plug and the plug wire.
  • The tool is double-ended to offer a straight boot and a 90boot on one tool. With the engine running, the tool flashes a mirror image of ignition spark.
  • Patent: 6,714,015
See more product details

Frequently bought together

$12.12
Get it as soon as Wednesday, Apr 3
In Stock
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$19.99
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Sold by BETOOLL and ships from Amazon Fulfillment.
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$16.60
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From the manufacturer


*All items listed can be purchased individually

The Innovator In Specialty Tools

Lisle Specialty Tools, Mechanic's Creepers, and Lubrication & Tire products are the preferred line among automotive warehouse distributors and jobbers because Lisle manufactures quality products that are priced right.

Lisle 20610 Inline Spark Tester

Gives a Visual Check of the Ignition System. Quickly diagnose problems with all ignition systems. Connect the tool between the spark plug and the plug wire. The tool is double-ended to offer a straight boot and a 90 boot on one tool. With the engine running, the tool flashes a mirror image of ignition spark.

  • 20680: Replacement Bulb

Uses for the 20610 Inline Spark Tester

2

Using Straight Boot on Spark Plug.

Using 90º Boot on Spark Plug.

Product Description

Gives a Visual Check of the Ignition System.

Quickly diagnose problems with all ignition systems. Connect the tool between the spark plug and the plug wire. The tool is double-ended to offer a straight boot and a 90boot on one tool. With the engine running, the tool flashes a mirror image of ignition spark.

Patent: 6,714,015

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

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Lisle 20610 Inline Spark Tester, One Size, Factory


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What's in the box

  • Spark Tester
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    Price-33% $12.12
    List:$18.10
    $7.99$14.88$5.99$6.99$6.69
    Delivery
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Customer Ratings
    Easy to use
    4.7
    4.6
    4.6
    4.1
    4.5
    4.2
    Accuracy
    4.6
    4.6
    4.2
    3.8
    4.2
    3.9
    Value for money
    4.6
    4.5
    4.5
    3.7
    4.3
    4.0
    Sold By
    Amazon.com
    YEYETUO Direct
    YDL Direct
    BLAU GRUN
    Golamping
    stymart
    power source
    Hand Powered
    Corded Electric
    Corded Electric
    Corded Electric
    Corded Electric
    Corded Electric
    style
    Inline Spark Tester
    Standard
    Modern

    Looking for specific info?

    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    6,029 global ratings

    Customers say

    Customers like the performance, quality and ease of use of the electric circuit testing device. For example, they mention it works perfectly on machines with pull starts and electric starters, it's easy to install and great value for money. That said, opinions are mixed on brightness.

    AI-generated from the text of customer reviews

    304 customers mention284 positive20 negative

    Customers are satisfied with the quality of the electric circuit testing device. They mention that it is high quality, durable, and well constructed. The boots on each side are made of good quality rubber, and everything snaps together really nice. The product is easy to see, bright, and reliable. Customers also appreciate the glass housing and sturdy rubber wires and boots. Overall, customers find the product to be a simple but useful tool.

    "...only used a few times so I can’t attest to its durability but it feels well built and it worked quite well." Read more

    "built well and easy to use connects to plugs and wires or coil packs" Read more

    "I use this for motorcycles mostly and it does the job well. Good quality, made in the US, and the price is very reasonable...." Read more

    "...Well made like all of their tools." Read more

    300 customers mention284 positive16 negative

    Customers are satisfied with the performance of the electric circuit testing device. They mention that it works well, is simple to use, and is better than several cheaper types. Some say that it's great for diagnosing electrical problems, and for checking spark plugs. Overall, most are happy with their purchase and recommend it to others.

    "...I can’t attest to its durability but it feels well built and it worked quite well." Read more

    "I use this for motorcycles mostly and it does the job well. Good quality, made in the US, and the price is very reasonable...." Read more

    "This worked well, except for the fact that the straight end of the wire isn't long enough to seat onto the spark plug in a Subaru cylinder head...." Read more

    "...the coil & switch on the engine on my chipper/shredder, and this unit worked perfectly. I had originally purchased a cheaper unit which did not work...." Read more

    168 customers mention168 positive0 negative

    Customers find the electric circuit testing device easy to use. They say it simplifies a tedious process, is simple but useful, and snaps together really nice. Customers also say it saves time and frustration.

    "built well and easy to use connects to plugs and wires or coil packs" Read more

    "...Easy to use and compact to store." Read more

    "Easy to use with no issues." Read more

    "...The boots on each side are good quality rubber and everything snaps together really nice...." Read more

    100 customers mention73 positive27 negative

    Customers like the spark tester. They say it's a simple way to check spark on any gas engine, and it tells you immediately if you have spark. It's also great for diagnosing lost spark conditions and ignition while the engine is running. Customers also mention that the sparks are visible, making it easier to look for spark when attempting to start a dead engine.

    "This is a great little spark tester. Easy enough to see the spark light. And with a couple of adapters it should work on may makes and models." Read more

    "...product, but it seems well made and that it would do the simple task of checking for spark...." Read more

    "Tests for spark, but that's it. No way to tell strength of spark or any way to test length of spark. I like that it comes with the longer boots." Read more

    "This little tool helps you to immediately test a plug to assure that you have good spark...." Read more

    94 customers mention94 positive0 negative

    Customers appreciate the value of the electric circuit testing device. They say it's a money and time saver.

    "...Good quality, made in the US, and the price is very reasonable...." Read more

    "Great price" Read more

    "Works as designed. A name brand tool for a fair price." Read more

    "...Very well made and worth the price." Read more

    15 customers mention15 positive0 negative

    Customers find the electric circuit testing device very safe and easy to use. They say it provides good protection, with secure plug boots. Customers also say the device is easy to handle and won't get shocked. They mention there are no springs to fall apart and it allows for a more solid path, which can sometimes help improve idle.

    "...This allows for a more solid path, which can sometimes help improve idle...." Read more

    "...Works as it is intended making the task much simpler and safer." Read more

    "...Well built and easy to see and handle without getting shocked . The 90 and straight shot cord is great for getting in the tight spots...." Read more

    "Such a great invention, an easy, safe method of testing whether or not the engine that someone is repairing has ignition spark or not...." Read more

    94 customers mention59 positive35 negative

    Customers are mixed about the brightness of the electric circuit testing device. Some mention that the light is bright enough to see with their shop lights on, while others say that it can be hard to see the light glow.

    "...I highly recommend this unit, as it works well, and the light is easy to see." Read more

    "...Good spark shows as good strong light. Poor spark shows as weak or no light. Used it today to diagnose bad coil on two cylinder engine." Read more

    "This is a great little spark tester. Easy enough to see the spark light. And with a couple of adapters it should work on may makes and models." Read more

    "...Works as described with nice spark viewing area. Would surely recommend." Read more

    45 customers mention12 positive33 negative

    Customers are dissatisfied with the size of the electric circuit testing device. For example, they mention the ends are too big to be in-line with smaller spark plugs, the wire does not fit tight, and the length is a little short. That said, they say it works well and gets the job done.

    "...worked well, except for the fact that the straight end of the wire isn't long enough to seat onto the spark plug in a Subaru cylinder head...." Read more

    "...coils on a 2014 Honda Accord was almost impossible because of how short the wire is. I had to improvise a lot to get my testing done...." Read more

    "...I like that it comes with the longer boots." Read more

    "...well constructed compared to the other I purchased but the probe tip isn't long enough to make contact in a plug wire that has a long cap...." Read more

    Great little tester, especially with a few mods
    5 Stars
    Great little tester, especially with a few mods
    This is a nice quality item for sure. The boots on each side are good quality rubber and everything snaps together really nice.On my particular tester (see attached photos), I made a few modifications which make this particular tester extra versatile. You can see I have taken a sharp razor blade and cut the boot where it extends on the 90 degree part.I made this modification because I use this tester on both my chainsaws as well as my Toyota pickup and sometimes I need a little access point where i can clip on an external timing light. Sure, they do have induction type timing lights, but those can give inaccurate readings due to spark plug wire shielding and also other spark plug wires nearby. What I have done is cut the boot where it makes a 90 degree turn; this allows me to either use the tester with or without that little section of rubber. When used with the cut off piece installed, then it works like normal. When used without the small length of rubber, then I have a nice clean metal contact point for either a direct electrical clamp or even the induction clamp (away from other spark plug wires). This little upgrade is really nice, just don't grab it with your bare fingers while the motor is running :)You can also see in the photos that I have replaced the light with a length of just plain spring. This allows for a more solid path, which can sometimes help improve idle. Nothing wrong with the original light that is supplied, but when using high voltage coils on race motors, etc. sometimes I just like having a direct path to the spark plug also. It's easy enough to unscrew the plastic housing and return the original light back into the mix also, thanks to the very nice design by Lisle.Great little addition to any tool kit. 5-stars for sure.
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    Top reviews from other countries

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    Alberto
    5.0 out of 5 stars Spark tester
    Reviewed in Mexico on March 24, 2024
    Style: Inline Spark TesterVerified Purchase
    Amazon Customer
    5.0 out of 5 stars facile a installer
    Reviewed in Canada on February 29, 2024
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    Jorge
    5.0 out of 5 stars Fácil de usar
    Reviewed in Mexico on November 11, 2023
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    Jacob
    5.0 out of 5 stars Bought @ ChrisFix's Recommendation
    Reviewed in Canada on December 3, 2022
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    AutoRealty
    5.0 out of 5 stars Simple to use and reliable
    Reviewed in Australia on September 16, 2022
    Style: Inline Spark TesterVerified Purchase
    Customer image
    AutoRealty
    5.0 out of 5 stars Simple to use and reliable
    Reviewed in Australia on September 16, 2022
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