The Sealey VS5261 is a four-piece HT lead testing set designed for diagnosing ignition system faults on petrol engines. This diagnostic tool enables mechanics and technicians to quickly identify poor HT supply issues by providing a visual indication of spark quality through regular flashing during engine operation. The tester fits between the spark plug and HT lead, allowing for both single cylinder testing and simultaneous multiple cylinder diagnosis across the entire ignition system. Simply connect the tester to each spark plug position and run the engine – consistent flashing confirms a good high tension supply, whilst irregular or absent flashing indicates ignition problems requiring attention. This diagnostic set is particularly useful for troubleshooting misfires, rough running, and starting problems on conventional ignition systems. Please note this tester is not suitable for engines with deeply recessed spark plugs where access is restricted. Features and Benefits: • Four-piece set enables testing across multiple cylinders simultaneously • Visual flashing indicator provides instant diagnosis of HT supply quality • Simple connection between spark plug and HT lead for quick fault-finding • Lightweight design at just 0.07kg for easy handling during diagnostics Specifications: Brand: Sealey Nett Weight: 0.07kg

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