{"product_id":"dayuan-diesel-compression-tester-kit-17-piece-0-70-bar-gauge-with-14in-hose-adapters","title":"DAYUAN Diesel Compression Tester Kit 17-Piece 0–70 bar Gauge with 14in Hose \u0026 Adapters","description":"\u003cp\u003e\u003cstrong\u003eDAYUAN's 17-piece diesel compression tester kit is a complete diagnostic set with a 0–70 bar (0–1000 psi) gauge, release valve, and a range of glow plug and injector adapters for accurate compression checks on most diesel engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you're a professional mechanic or a DIYer troubleshooting a diesel truck, tractor, or car, reliable compression readings are essential to identify worn piston rings, leaking valves, or head gasket issues. This DAYUAN kit bundles a high-range analog gauge with a 14-inch flexible hose and a full complement of adapters so you can access combustion chambers through glow plugs or injectors on many common diesel engine types.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this kit measure compression accurately?\u003c\/h3\u003e\n\u003cp\u003eThe kit's heavy-duty analog gauge reads from 0 to 70 bar (0–1000 psi) and includes a bleed\/release valve for controlled decompression after each test. A 35.5 cm (14 inch) flexible hose lets you position the gauge away from hot engine parts for safe, repeatable readings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRobust 0–70 bar \/ 0–1000 psi gauge for wide-range diagnostics\u003c\/li\u003e\n  \u003cli\u003eBuilt-in release valve allows safe pressure venting\u003c\/li\u003e\n  \u003cli\u003e14-inch flexible tubing for easier access in tight engine bays\u003c\/li\u003e\n  \u003cli\u003eClear analog dial for quick visual comparison between cylinders\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich adapters are included and what engines do they fit?\u003c\/h3\u003e\n\u003cp\u003eThe set contains nine glow plug adapters and four injector adapters covering many metric thread sizes commonly found on diesel engines. Each adapter is labeled for quick selection, and the assortment supports a broad spectrum of light- and medium-duty diesel engines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e9 glow plug adapters, including M10 and M12 variants, various lengths for reach\u003c\/li\u003e\n  \u003cli\u003e4 injector adapters: M20x1.5, M22x1.5, M24x1.5, and M24x2.0 with specific lengths\u003c\/li\u003e\n  \u003cli\u003eAdapters designed to thread into glow plug or injector ports for leak-tight seals\u003c\/li\u003e\n  \u003cli\u003eIncludes an adapter resetter tool and convenient shortcuts for attachment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use this tester safely and effectively?\u003c\/h3\u003e\n\u003cp\u003ePrepare the engine by disabling fuel and ignition, then remove the glow plug or injector to insert the appropriate adapter. Crank the engine several revolutions while watching the gauge; record peak pressure for each cylinder and use the release valve to safely bleed pressure before removing the hose.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAlways disable fuel and ignition before testing to prevent starts\u003c\/li\u003e\n  \u003cli\u003eSelect the correct adapter and ensure a tight seal before cranking\u003c\/li\u003e\n  \u003cli\u003eCrank engine consistently, note peak readings, and bleed with the valve\u003c\/li\u003e\n  \u003cli\u003eCompare readings across cylinders to spot worn rings, valves, or head issues\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance does the kit require to stay reliable?\u003c\/h3\u003e\n\u003cp\u003eKeep the gauge, hose, and adapters clean and dry; store them in the provided case to protect threaded fittings and the dial. Periodically check adapter threads and the hose for wear or tears and ensure the gauge needle returns to zero when not pressurized.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWipe adapters and hose after use to remove oil and debris\u003c\/li\u003e\n  \u003cli\u003eInspect threads and O-rings for damage before each use\u003c\/li\u003e\n  \u003cli\u003eStore in a protective case to prevent impact or bending of the gauge\u003c\/li\u003e\n  \u003cli\u003eReplace any cracked hose or worn adapter to maintain accurate readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The DAYUAN 17-piece diesel compression tester suits professional technicians, fleet mechanics, and experienced home mechanics who need a versatile, high-range compression gauge and a comprehensive set of adapters. If you work on a variety of diesel cars, trucks, or tractors and require dependable, repeatable cylinder pressure measurements, this kit delivers the tools to diagnose common engine wear and sealing problems quickly and accurately.\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: Does this kit work on gasoline engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — this compression tester is designed for diesel engines using glow plug or injector ports; gasoline engines require a spark-plug-style tester.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the gauge measure both bar and psi?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the analog gauge displays pressure in 0–70 bar and 0–1000 psi for flexible measurement units.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"DAYUAN","offers":[{"title":"Default Title","offer_id":48083162792094,"sku":"B07FLTBH6C","price":60.45,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/dayuan-front-gauge-and-case.jpg?v=1785827249","url":"https:\/\/northtrailauto.ca\/products\/dayuan-diesel-compression-tester-kit-17-piece-0-70-bar-gauge-with-14in-hose-adapters","provider":"North Trail Auto","version":"1.0","type":"link"}