{"product_id":"cdi-electronics-8-cylinder-spark-gap-tester-adjustable-enclosed-667-5119766","title":"CDI Electronics 8-Cylinder Spark Gap Tester | Adjustable, Enclosed, Ignition Diagnostic Tool","description":"\u003ch2\u003eDiagnose Ignition Problems Before You Replace Parts.\u003c\/h2\u003e\u003cp\u003eThe CDI Electronics 8-Cylinder Spark Gap Tester is a professional-grade diagnostic tool for testing spark output on marine and automotive ignition systems. By placing the tester inline between the ignition wire and the spark plug, you can visually confirm whether each cylinder is producing a strong, consistent spark — helping you pinpoint weak or missing ignition before replacing coils, stators, or other components.\u003c\/p\u003e\u003cp\u003eThe enclosed design helps reduce the risk of igniting fuel vapours during testing, making it a safer choice for use in the marine engine compartment. The adjustable spark gap lets you set the resistance level to match the demands of your ignition system, and the heavy-duty wire allows the tester to be mounted in any position for hands-free use during cranking tests.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Ignition wires are sold separately.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTests up to 8 cylinders — suitable for inline 4, V6, and V8 engine configurations\u003c\/li\u003e\n\u003cli\u003eAdjustable spark gap — set resistance to match your ignition system requirements\u003c\/li\u003e\n\u003cli\u003eEnclosed design — helps reduce the risk of igniting fuel vapours during testing\u003c\/li\u003e\n\u003cli\u003eHeavy-duty wire — mount in any position for hands-free testing during engine cranking\u003c\/li\u003e\n\u003cli\u003eIgnition wires sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMarine outboard and sterndrive engines with 4, 6, or 8-cylinder configurations\u003c\/li\u003e\n\u003cli\u003eDiagnosing weak or missing spark on Mercury, MerCruiser, Yamaha, Volvo Penta, and other marine engines\u003c\/li\u003e\n\u003cli\u003eTesting ignition coil output before replacing coils or stators\u003c\/li\u003e\n\u003cli\u003eAutomotive ignition systems requiring spark gap testing\u003c\/li\u003e\n\u003cli\u003eAny application where visual spark confirmation is needed during ignition diagnosis\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eThis tester is the right tool when you're chasing a no-start, rough idle, or misfire and want to confirm whether the ignition system is delivering spark before spending money on parts. It's especially useful for isolating which cylinder is losing spark on a multi-cylinder engine — something that's difficult to determine without a dedicated tester.\u003c\/p\u003e\u003cp\u003eUse this tool to test before replacing ignition components. If the tester confirms weak or no spark, the next step is typically checking the ignition coils — see the \u003ca href=\"\/products\/mercury-oem-ignition-coil-806673t1\"\u003eMercury OEM Ignition Coil 806673T1\u003c\/a\u003e or the \u003ca href=\"\/products\/merc-1127\"\u003eMercury MerCruiser Ignition Coil Kit 8M0079202\u003c\/a\u003e. If coils test good but spark is still weak, the stator may be the cause — see the \u003ca href=\"\/products\/cdi-electronics-mercury-stator-oem-replacement-1748778k1-667-1748778k1\"\u003eCDI Electronics Mercury Stator\u003c\/a\u003e. For spark plugs, see the \u003ca href=\"\/products\/quicksilver-ngk-iridium-spark-plug-set-889246q39\"\u003eQuicksilver NGK Iridium Spark Plug Set\u003c\/a\u003e.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250814746660,"sku":"667-5119766","price":234.69,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/667-5119766.jpg?v=1786510599","url":"https:\/\/marisolmarine.com\/products\/cdi-electronics-8-cylinder-spark-gap-tester-adjustable-enclosed-667-5119766","provider":"Marisol Marine Company","version":"1.0","type":"link"}