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Lisle 20610 Inline Spark Tester, One Size, Factory

Lisle 20610 Inline Spark Tester, One Size, Factory

Q: Using this to test the coil on my vehicle. I get intermittent small reddish flash. Not sure how to interpret this? Is any light a positive sign?

Use the tester in a dim lighting area and when you see the reddish-orange flash, that shows a bad spark. A healthy spark will be more intense with a blueish-white spark. I used this tester on my riding mower on June 1, 2015 and replaced the ignition module (same as a vehicle coil). The tester showed the difference before and after!

Q: Can this be used for my 115 outboard motor?

Yes Ihave used it Mine and Ihave Used it on Lawnmovers

Q: How do you use this with a lawnmower that doesn't start? Hooking it up is simple, but then what? Pull the recoil starter rope & look at the light?

Yes, if it starts the light will flash everytime the sparkplug sparks. If it does not start the light will flash everytime the sparkplug gets power and then you know it is not an electrical problem. It can then be either a bad sparkplug or a fuel problem. If it does not flash when you pull the rope then it is an electrical malfunction (ie. magneto, points, or electronic ignition problem). Always test your light to make sure it works on something else that runs.

Product ID: 3746066

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Details

Brand
Lisle
Power Source
Hand Powered
Style
Inline Spark
Color
Red
Item Weight
0.25 Pounds

⚡Instant spark visualization

🔧Dual-ended design for versatile fit

⏱️Rapid ignition system diagnosis

Description

⚡ Diagnose ignition issues like a pro—don’t let your engine miss a beat!

COMPACT LIGHTWEIGHT - Weighing just 4 ounces, it’s the perfect tool to keep in your professional toolkit.
DUAL ENDED VERSATILITY - Switch effortlessly between straight and 90° boot connections for all spark plugs.
HAND POWERED PRECISION - No batteries needed—rely on pure mechanical feedback for accurate testing.
VISUAL SPARK CONFIRMATION - See your ignition system’s health in real-time with a clear spark flash.
PATENT PROTECTED INNOVATION - Backed by patented technology (US 6,714,015) ensuring reliable and trusted performance.

The Lisle 20610 Inline Spark Tester is a compact, hand-powered diagnostic tool designed to provide instant visual confirmation of ignition system performance. Featuring a patented dual-ended design, it fits both straight and 90° spark plug boots, enabling quick and reliable troubleshooting for all ignition systems. Lightweight and easy to use, it’s an essential tool for professionals seeking fast, accurate spark testing without the hassle of batteries.

Specifications

Brand	Lisle
Power Source	Hand Powered
Style	Inline Spark Tester
Color	Red
Item Weight	0.25 Pounds
Item dimensions L x W x H	10.5 x 5.75 x 1 inches
Measurement Type	Ohmmeter
UPC	083045206101
Manufacturer	Lisle
Global Trade Identification Number	00083045206101
Model	Lisle 20610 Inline Spark Tester
Item Weight	4 ounces
Product Dimensions	10.5 x 5.75 x 1 inches
Item model number	20610
Is Discontinued By Manufacturer	No
Manufacturer Part Number	20610
OEM Part Number	20610

Have a Question? See What Others Asked

Using this to test the coil on my vehicle. I get intermittent small reddish flash. Not sure how to interpret this? Is any light a positive sign?

Can this be used for my 115 outboard motor?

How many items (testers are in one pack)? The price per packs is confusing. Kind Regards

How do you use this with a lawnmower that doesn't start? Hooking it up is simple, but then what? Pull the recoil starter rope & look at the light?

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