{"product_id":"prokomon-cylinder-leak-down-tester-kit-grey-dual-gauge-workshop-set-with-adapters","title":"Prokomon Cylinder Leak Down Tester Kit — Grey Dual-Gauge Workshop Set with Adapters","description":"\u003cstrong\u003eProkomon Engine Cylinder Leak Down Tester Kit is a complete dual-gauge kit designed to diagnose compression leaks in gasoline engines quickly and accurately.\u003c\/strong\u003e\n\n\u003cp\u003eThis grey, workshop-ready set links to an air compressor to pressurize a cylinder and reveal where air is escaping—whether past piston rings, through valves, head gaskets, or cylinder cracks. The kit combines a twin-gauge manifold with a range of adapters, push-on connectors, and extension pieces so you can test most spark-plug-equipped gasoline engines without disassembling the top end.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this kit identify where an engine is leaking?\u003c\/h3\u003e\n\u003cp\u003eThe Prokomon tester pressurizes a single cylinder and measures both input pressure and the percentage of leakage simultaneously. Observing the leak percentage while listening and feeling for escaping air points you to worn rings (air at the crankcase), leaking valves (air in the intake\/exhaust), or head gasket issues (air in coolant passages).\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDual gauges show supply pressure (0–100 psi \/ 0–7 bar) and leak rate (0–100%).\u003c\/li\u003e\n  \u003cli\u003eAdapters let you seal the spark plug hole to pressurize the cylinder reliably.\u003c\/li\u003e\n  \u003cli\u003eDetects leaks without removing pistons or heads—saves time and labor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat components are included and how do they improve testing?\u003c\/h3\u003e\n\u003cp\u003eThe kit builds on a basic manifold set by adding several handy connectors and extensions that increase versatility across engine types. A pressure-regulating valve and American-style air plug allow controlled input from a compressor, while push-on connectors simplify connection in tight spark-plug wells.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble-gauge manifold with an 18-inch hose and AR2000 pressure regulator for fine control.\u003c\/li\u003e\n  \u003cli\u003eTwo metal threaded adapters, two universal push-on connectors, and a rubber hose for various plug sizes.\u003c\/li\u003e\n  \u003cli\u003eM14 aluminum extension rod and extra extension hose for deep or recessed plugs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow accurate and compatible is the pressure reading on this tester?\u003c\/h3\u003e\n\u003cp\u003eThe gauges measure supply and leakage with a stated accuracy of approximately 0.5%, covering the common diagnostic range for petrol engines. The pressure range and adapter selection make it suitable for most gasoline engines using spark plugs up to 20 mm thread diameter.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePressure scale from 0–100 psi (0–7 bar) useful for routine garage checks.\u003c\/li\u003e\n  \u003cli\u003eLeak percentage readout helps quantify severity so you can prioritize repairs.\u003c\/li\u003e\n  \u003cli\u003eCompatibility targets most spark-ignition engines; verify plug size and compressor settings before testing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Prokomon Engine Cylinder Leak Down Tester Kit suits professional mechanics, home DIYers, and automotive technicians who need a portable, accurate way to diagnose internal engine leakage without major teardown. If you perform engine troubleshooting regularly, work on a variety of petrol vehicles, or want a reliable tool to confirm suspected ring, valve, or gasket failures, this kit supplies the gauges and fittings to make informed repair decisions.\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 this kit test diesel engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No; it’s designed for gasoline engines with spark plugs and adapters sized for typical petrol plug threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need an air compressor to use the tester?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes; the kit requires a separate air compressor and the correct inlet pressure to operate the gauge and regulator.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Prokomon","offers":[{"title":"Default Title","offer_id":55171624567127,"sku":"B0FGP81FRL","price":80.55,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/prokomon-front-manifold-gauge_d8e33384-9b49-4ae2-8d08-fd60f625e7ab.jpg?v=1790448893","url":"https:\/\/britishgarage.co.uk\/products\/prokomon-cylinder-leak-down-tester-kit-grey-dual-gauge-workshop-set-with-adapters","provider":"British Garage","version":"1.0","type":"link"}