{"product_id":"prokomon-petrol-gasoline-engine-compression-tester-kit-300-psi-gauge-m10-m18-adapters-extensions","title":"Prokomon Petrol\/Gasoline Engine Compression Tester Kit — 300 PSI Gauge, M10–M18 Adapters \u0026 Extensions","description":"\u003cstrong\u003eProkomon Petrol Gasoline Engine Compression Tester Kit is a complete, portable kit for measuring cylinder pressure on gasoline engines up to 300 PSI (20 BAR).\u003c\/strong\u003e\n\n\u003cp\u003eThis compression tester kit gives clear, repeatable cylinder pressure readings so you can diagnose common petrol engine problems without guesswork. The kit combines a large, easy-to-read analog gauge with multiple threaded adapters, metal extension pieces and a flexible hose to reach deep or awkward spark plug holes. It's designed for hobbyists, mechanics and fleet operators who need reliable pressure checks on cars, motorcycles, lawn mowers, ATVs and other petrol-powered equipment (not for diesel engines).\u003c\/p\u003e\n\n\u003ch3\u003eHow does this tester help find engine issues?\u003c\/h3\u003e\n\u003cp\u003eMeasuring static compression in each cylinder reveals leaks and mechanical wear that affect performance. Low or uneven readings point to valve sealing problems, worn rings, head gasket failure or piston damage, helping you target repairs faster.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDetects stuck or leaking valves and worn piston rings\u003c\/li\u003e\n  \u003cli\u003eIdentifies cracked heads and blown head gaskets by comparing cylinder-to-cylinder values\u003c\/li\u003e\n  \u003cli\u003eFinds carbon build-up or burned pistons via reduced compression numbers\u003c\/li\u003e\n  \u003cli\u003eHelps decide if further tests (leak-down) are needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat components are included and why they matter?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains a spring-buckle pressure gauge, five threaded adapters (M10–M18), metal extension pieces and a flexible hose so you can adapt to most petrol engine spark plug configurations. Each part is chosen to give a secure seal and consistent readings even in deep spark plug wells.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSpring-buckle pressure gauge rated to 300 PSI \/ 20 BAR for a wide range of petrol engines\u003c\/li\u003e\n  \u003cli\u003eAdapters M10, M12, M14, M16, M18 cover most small and automotive spark plug threads\u003c\/li\u003e\n  \u003cli\u003e200 mm metal extension and two 50 mm rods for deep or recessed plugs\u003c\/li\u003e\n  \u003cli\u003eFlexible extension hose for angled or confined access\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow accurate and durable is the gauge?\u003c\/h3\u003e\n\u003cp\u003eThe large-dial analog meter with acrylic cover and rubber boot is built for shop use, offering shock absorption and clear visibility. A built-in check valve holds peak pressure so you can read the maximum compression after cranking, improving test consistency.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDual-unit dial (PSI and BAR) for international use and easy comparison\u003c\/li\u003e\n  \u003cli\u003eAcrylic lens and rubber protective cover resist impacts and drops\u003c\/li\u003e\n  \u003cli\u003eInternal check valve retains peak pressure for simple reading after engine crank\u003c\/li\u003e\n  \u003cli\u003eMetal adapters and extensions provide reliable thread engagement and longevity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use this kit on all engines and how do I use it safely?\u003c\/h3\u003e\n\u003cp\u003eThis kit is intended for gasoline (petrol) engines only and is not suitable for diesel engines. For safe and accurate tests, follow basic engine safety: disable ignition, crank the engine only with the starter, and record readings cylinder by cylinder under the same conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNot intended for diesel engines — use only on petrol spark-ignition engines\u003c\/li\u003e\n  \u003cli\u003eAlways disable ignition\/coils and remove fuel pump fuse before testing\u003c\/li\u003e\n  \u003cli\u003eCrank engine with throttle fully closed and record the peak gauge reading\u003c\/li\u003e\n  \u003cli\u003eCompare readings across cylinders to detect irregularities\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Prokomon’s Petrol Engine Compression Tester Kit is a practical tool for DIY mechanics, motorcycle and small-engine owners, maintenance technicians and professional garages that need a quick way to verify cylinder health. If you work on cars, ATVs, lawn equipment or motorcycles and want repeatable compression results with a single kit that fits most spark plug sizes, this set gives the adapters, extensions and a rugged gauge to get the job done accurately and efficiently.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this compression tester suitable for diesel engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This Prokomon kit is designed for petrol (gasoline) spark-ignition engines only, not diesel engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What PSI range does the gauge measure?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The gauge reads up to 300 PSI (20 BAR) and includes a check valve to hold peak compression for easy reading.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Prokomon","offers":[{"title":"Default Title","offer_id":48085625372830,"sku":"B0C4L8LRW8","price":49.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/prokomon-gauge-front-view.jpg?v=1785875186","url":"https:\/\/northtrailauto.ca\/products\/prokomon-petrol-gasoline-engine-compression-tester-kit-300-psi-gauge-m10-m18-adapters-extensions","provider":"North Trail Auto","version":"1.0","type":"link"}