{"product_id":"tonzack-automotive-compression-tester-kit-0-20-bar-0-300-psi-dual-scale-gauge-m10-m12-m14-m18-adapters-inline-spark-tester","title":"TONZACK Automotive Compression Tester Kit — 0–20 bar (0–300 psi) Dual-Scale Gauge, M10\/M12\/M14\/M18 Adapters \u0026 Inline Spark Tester","description":"\u003cp\u003e\u003cstrong\u003eTONZACK Automotive Compression Tester Kit is a complete engine compression and ignition troubleshooting set that measures up to 0–20 bar (0–300 psi) and includes four spark plug thread adapters plus an inline spark tester.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you are a home mechanic or a professional technician, this TONZACK kit consolidates the core tools needed to assess cylinder compression and ignition circuit continuity quickly. The kit's dual-scale gauge, heavy-duty adapters (M10, M12, M14, M18), and an inline spark tester let you inspect engine health, detect piston-ring or valve leaks, and verify spark delivery without guesswork. Built for broad vehicle compatibility, it works across petrol engines in passenger cars, light trucks and many motorcycles.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I perform a compression test with this kit?\u003c\/h3\u003e\n\u003cp\u003eAttach the correct threaded adapter for the cylinder's spark plug hole, screw it in hand-tight, connect the hose, and crank the engine to record peak pressure on the dual-scale gauge. Repeat across cylinders to compare readings and identify weak ones.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChoose adapter: M10, M12, M14, or M18 to match spark plug threads.\u003c\/li\u003e\n  \u003cli\u003eUse the angled or straight pressure tube depending on access.\u003c\/li\u003e\n  \u003cli\u003eCrank with throttle open for consistent readings.\u003c\/li\u003e\n  \u003cli\u003eCompare results cylinder-to-cylinder for losses or leaks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat does the dual-scale gauge tell me and why it matters?\u003c\/h3\u003e\n\u003cp\u003eThe gauge displays pressure in bar and psi (0–20 bar \/ 0–300 psi), letting you read results in the units familiar to your vehicle or workshop. Accurate, easy-to-read feedback helps you decide whether compression is within manufacturer tolerance or if components like rings, valves, or head gaskets may be failing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBar and psi scales for versatility and clarity.\u003c\/li\u003e\n  \u003cli\u003eRubber protective sleeve prevents impact damage and improves grip.\u003c\/li\u003e\n  \u003cli\u003eSensitive outlet valve allows controlled release and resets the gauge.\u003c\/li\u003e\n  \u003cli\u003eSelf-locking joint keeps connections secure during testing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I test ignition and spark with the same set?\u003c\/h3\u003e\n\u003cp\u003eYes—the included inline spark tester plugs into the ignition lead to check for spark presence and strength without removing the plug from the wire. This helps distinguish compression-related problems from ignition faults quickly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInline spark tester verifies continuity and sparking at the plug lead.\u003c\/li\u003e\n  \u003cli\u003eSpeeds diagnosis by separating mechanical compression issues from ignition faults.\u003c\/li\u003e\n  \u003cli\u003eWorks on any petrol engine that uses a conventional spark plug lead.\u003c\/li\u003e\n  \u003cli\u003eCompact design reduces risk of cable damage during testing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and accessories are included in the kit?\u003c\/h3\u003e\n\u003cp\u003eThe TONZACK kit is built from corrosion-resistant materials and packed with accessories to cover most petrol engine testing scenarios. You get robust adapters, copper-plated fittings, and a protective toolbox to keep everything organized and transportable.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne dual-scale compression gauge (0–20 bar \/ 0–300 psi) with rubber sleeve.\u003c\/li\u003e\n  \u003cli\u003eOne flexible copper-reinforced hose and two pressure tubes (straight and angled).\u003c\/li\u003e\n  \u003cli\u003eFour threaded adapters: M10, M12, M14, M18 for common spark plug sizes.\u003c\/li\u003e\n  \u003cli\u003eOne inline spark tester, instruction manual, and PE storage toolbox.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The TONZACK Automotive Compression Tester Kit suits DIY mechanics, fleet maintenance staff, and professional repair shops that need a reliable, all-in-one compression and spark-checking solution. It's especially useful when diagnosing misfires, low-power complaints, suspected ring or valve wear, and verifying repairs after cylinder head or gasket work. The kit's range of adapters and dual-scale gauge also makes it a practical choice for technicians working across varied vehicle makes and light-duty engines.\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: Will this work on my petrol car?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the kit supports most petrol engines with spark plugs using M10, M12, M14, or M18 threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need special tools to read pressure?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No, the dual-scale gauge is ready to read; just attach the correct adapter and crank the engine.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TONZACK","offers":[{"title":"Default Title","offer_id":67592458141881,"sku":"B0DHPCZJRN","price":59.82,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/tonzack-compression-gauge-front.jpg?v=1790564085","url":"https:\/\/redleafauto.ca\/products\/tonzack-automotive-compression-tester-kit-0-20-bar-0-300-psi-dual-scale-gauge-m10-m12-m14-m18-adapters-inline-spark-tester","provider":"Redleaf Auto","version":"1.0","type":"link"}