--- product_id: 254740982 title: "Lisle 20610 Inline Spark Tester, One Size, Factory" brand: "lisle" price: "£19.05" currency: GBP in_stock: true category: "Lisle" url: https://www.desertcart.co.uk/products/254740982-lisle-20610-inline-spark-tester-one-size-factory store_origin: GB region: United Kingdom --- # Visual spark check Dual-ended design Instant ignition diagnosis Lisle 20610 Inline Spark Tester, One Size, Factory **Brand:** lisle **Price:** £19.05 **Availability:** ✅ In Stock ## Summary > ⚡ Diagnose like a pro, spark your engine’s true potential! ## Quick Answers - **What is this?** Lisle 20610 Inline Spark Tester, One Size, Factory by lisle - **How much does it cost?** £19.05 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/254740982-lisle-20610-inline-spark-tester-one-size-factory) ## Best For - lisle enthusiasts ## Why This Product - Trusted lisle brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Lightweight:** Portable 122g design fits easily in your toolkit or glove box. - • **Dual-Ended Versatility:** Switch effortlessly between straight and 90° boots for all spark plug types. - • **Universal Compatibility:** Works seamlessly with all internal combustion engine ignition systems. - • **Certified Safety & Quality:** Meets CE, UL, RoHS, and EN 61010-1 standards for reliable, safe diagnostics. - • **Instant Spark Visualization:** See your ignition system’s health in real-time with a clear spark flash. ## Overview The Lisle 20610 Inline Spark Tester is a compact, dual-ended diagnostic tool designed for quick and accurate visual checks of ignition systems in all internal combustion engines. Featuring patented technology, it flashes a mirror image of the ignition spark while the engine runs, enabling instant troubleshooting. Lightweight and certified to top safety standards, it’s a must-have for professionals and enthusiasts aiming to maintain peak engine performance. ## 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 ## Features - 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002STSC6 | | ASIN | B0002STSC6 | | Best Sellers Rank | #62,772 in Automotive ( See Top 100 in Automotive ) #69 in Automotive Spark Plug & Ignition Tools | | Brand Name | Lisle | | Color | Red | | Compatible Devices | Vehicles with internal combustion engines | | Customer Reviews | 4.7 4.7 out of 5 stars (5,963) | | Customer reviews | 4.7 4.7 out of 5 stars (5,963) | | Date First Available | 1 January 2024 | | Department | unisex-adult | | Global Trade Identification Number | 00083045206101 | | Included Components | Spark Tester | | Is Discontinued By Manufacturer | No | | Item Dimensions | 26.7 x 14.6 x 2.5 centimeters | | Item Type Name | Spark Tester | | Item Weight | 122 g | | Item model number | 20610 | | Manufacturer | Lisle | | Manufacturer | Lisle | | Measurement Type | Ohmmeter | | Model | 20610 | | Part Interchange Info | 20610 | | Part Number | 20610 | | Power Source | Hand Powered | | Product Dimensions | 26.67 x 14.61 x 2.54 cm; 122.47 g | | Specification Met | CE, EN 61010-1, RoHS, UL | | Style Name | Inline Spark Tester | | UPC | 083045206101 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Lisle - **Colour:** Red - **Item weight:** 122 g - **Power source:** Hand Powered - **Style:** Inline Spark Tester ## Images ![Lisle 20610 Inline Spark Tester, One Size, Factory - Image 1](https://m.media-amazon.com/images/I/6146pi8z2WL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **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?** A: 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?** A: Yes Ihave used it Mine and Ihave Used it on Lawnmovers **Q: How many items (testers are in one pack)? The price per packs is confusing. Kind Regards** A: One tester. Two adapters. **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?** A: 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. ## Frequently Bought Together - Lisle 20610 Inline Spark Tester, One Size, Factory - Innova 3630 Remote Starter Switch - Ram-Pro Inline Spark Tester, Plug Engine Ignition 6-12 Volt Fool-Proof – Pick Up Coil/Armature Diagnostic Detector Tool for Automotive, Car, Lawnmower, Small & Big Internal/External Engines --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/254740982-lisle-20610-inline-spark-tester-one-size-factory](https://www.desertcart.co.uk/products/254740982-lisle-20610-inline-spark-tester-one-size-factory) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-13*