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!

Can this be used for my 115 outboard motor?

Yes Ihave used it Mine and Ihave Used it on Lawnmovers

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.

Lisle 20610 Inline Spark Tester One Size Factory

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

€ 34.77

Duties & taxes included

In stock

Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Italy.

Secure transaction

Description

⚡ Diagnose like a pro, fix like a boss!

COMPACT DURABLE - Lightweight metal build (122g) designed for on-the-go professionals who demand reliability
TRUSTED BY THOUSANDS - Highly rated with 4.7 stars from over 5,900 users—join the savvy mechanics who rely on Lisle
INSTANT SPARK INSIGHT - Diagnose ignition issues in seconds with real-time spark visualization ⚡
DUAL ENDED VERSATILITY - Switch effortlessly between straight and 90° boot connections for any spark plug setup 🔄
PLUG PLAY SIMPLICITY - Connects directly between spark plug and wire—no batteries or extra tools needed 🔧

The Lisle 20610 Inline Spark Tester is a compact, dual-ended diagnostic tool that quickly identifies ignition system problems by flashing a mirror image of the spark while the engine runs. Compatible with all ignition systems, it requires no batteries and offers both straight and 90° boot connections in one durable metal device favored by thousands of mechanics worldwide.

Specifications

ASIN	B0002STSC6
Batteries Included	No
Batteries Required	No
Best Sellers Rank	#331,587 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #2,394 in Ignitions
Brand	Lisle
Colour	Red
Compatible Devices	Air Cleaner
Customer Reviews	4.7 4.7 out of 5 stars (5,906)
Date First Available	7 August 2012
Does it contain liquid?	No
Generic Name	Spark Tester
Global Trade Identification Number	00083045206101
Item Dimensions LxWxH	26.7 x 14.6 x 2.5 Centimeters
Item Weight	122 g
Item dimensions L x W x H	26.7 x 14.6 x 2.5 Centimeters
Item model number	20610
Manufacturer	Lisle
Material	Metal
Measurement Type	Volts
Model	20610
Model Name	Lisle 20610 Inline Spark Tester
Mounting Hardware	Spark Tester
Net Quantity	1.0 Count
Number of items	2
Power Source	Battery Powered
Product Dimensions	26.67 x 14.61 x 2.54 cm; 122.47 g
Style	Inline Spark Tester
UPC	083045206101

Reviews

R**N

Time Saver

19.01.2026

A**.

This is a solid, functional tool designed for long term use that outshines cheaper versions

28.03.2026

R**B

GOOD PRODUCT

25.06.2025

K**N

Excelente producto

Muy útil. Pará identificar fallos en cables y bujías. Y saber si hay chispa.

13.03.2023

D**S

Great value I've used it for chainsaw and cars to.A must have if you want to know if you have spark

17.04.2025

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

€ 34.77

Duties & taxes included

In stock

Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Italy.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago