{"product_id":"autown-compression-tester-kit-13-piece-0-300-psi-fluorescent-gauge-with-spark-plug-testers","title":"AUTOWN Compression Tester Kit — 13-Piece, 0-300 PSI Fluorescent Gauge with Spark Plug Testers","description":"\u003cp\u003e\u003cstrong\u003eAUTOWN's Professional Compression Tester Kit is a 13-piece diagnostic set with a high-visibility fluorescent 0–300 PSI triple-scale gauge, five metal adapters, two spark plug testers, and a quick-release valve for accurate gasoline engine pressure testing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen you need fast, reliable cylinder compression readings on gasoline-powered vehicles and small engines, the AUTOWN kit packages professional features into a compact carrying case. The bright fluorescent dial and built-in Schrader valve make readings easier and more stable, while the included adapters and spark plug testers let you service cars, trucks, ATVs and many small gas engines without hunting for extra fittings.\u003c\/p\u003e\n\n\u003ch3\u003eHow accurate and readable are the pressure readings?\u003c\/h3\u003e\n\u003cp\u003eThe gauge delivers peak pressure readings up to 300 PSI, shown on three scales (PSI, Bar, kg\/cm²) for easy interpretation. Its fluorescent face improves contrast in dim workspaces, helping you spot small differences between cylinders.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTriple-scale dial: 0–300 PSI, 0–20 Bar, 0–21 kg\/cm²\u003c\/li\u003e\n  \u003cli\u003eHigh-visibility fluorescent background for low-light use\u003c\/li\u003e\n  \u003cli\u003eBuilt-in Schrader valve for stable, consistent measurements\u003c\/li\u003e\n  \u003cli\u003eSturdy mechanical gauge movement for reliable peak hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat components are included and how do I use them?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains five screw-in metal adapters (M10–M18), an extension hose, two spark plug testers, and a protective case, enabling quick setup across a broad range of gasoline engines. Attach the correct adapter to the spark plug hole, connect the hose to the gauge, crank the engine per instructions, then read the peak pressure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFive metal adapters covering common spark plug thread sizes (M10–M18)\u003c\/li\u003e\n  \u003cli\u003eExtension hose for hard-to-reach cylinders and angled access\u003c\/li\u003e\n  \u003cli\u003eTwo spark plug testers to confirm ignition issues separately\u003c\/li\u003e\n  \u003cli\u003eDurable carry case to store adapters, hose and gauge securely\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the AUTOWN tester safe and user-friendly?\u003c\/h3\u003e\n\u003cp\u003eSafety and convenience are built in: the quick-release valve lets you bleed pressure with one hand after testing, reducing risk, and the integrated Schrader valve removes the need for separate adapters. The metal adapters and hose fittings are designed for solid connections that resist leaks while testing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eQuick-release safety valve for controlled pressure release\u003c\/li\u003e\n  \u003cli\u003eIntegrated Schrader valve eliminates extra adapter requirements\u003c\/li\u003e\n  \u003cli\u003eRobust metal adapters minimize thread wear and sealing issues\u003c\/li\u003e\n  \u003cli\u003eCompact layout and labeled parts for straightforward operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat engines are compatible and what should I avoid?\u003c\/h3\u003e\n\u003cp\u003eThis compression set is made specifically for gasoline engines found in cars, light trucks, ATVs and many small gas-powered tools and engines. It is not designed for diesel engines, two-stroke crude oil systems, or applications requiring diesel-rated fittings and pressure ranges.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for gasoline automotive and small engine use\u003c\/li\u003e\n  \u003cli\u003eWorks with spark-ignition cylinders where spark plug threads are accessible\u003c\/li\u003e\n  \u003cli\u003eNot suitable for diesel engines or crude oil engine systems\u003c\/li\u003e\n  \u003cli\u003eVerify adapter fit and follow engine manufacturer testing procedure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Mechanics, home DIYers, restoration hobbyists and service technicians who need a dependable, portable cylinder compression solution for gasoline engines. If you perform routine engine diagnostics, troubleshooting for worn rings or valve sealing problems, or need a bright, easy-to-read gauge while working in a garage or on the road, the AUTOWN 13-piece kit supplies the fittings and features to get repeatable readings without extra adapters.\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: Can I use this tester on diesel engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This AUTOWN kit is built for gasoline spark-ignition engines and is not suitable for diesel or crude oil engine testing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the gauge require a separate Schrader valve adapter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The Schrader valve is integrated into the gauge, so no extra Schrader adapter is needed.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AUTOWN","offers":[{"title":"Default Title","offer_id":55168535626071,"sku":"B0FLHD83VD","price":72.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/autown-gauge-front-face.jpg?v=1790407224","url":"https:\/\/britishgarage.co.uk\/products\/autown-compression-tester-kit-13-piece-0-300-psi-fluorescent-gauge-with-spark-plug-testers","provider":"British Garage","version":"1.0","type":"link"}