{"product_id":"lutifix-5-hole-spark-plug-tester-200-9999-rpm-simulator-digital-display-adjustable-hole-height","title":"LUTIFIX 5-Hole Spark Plug Tester — 200–9999 RPM Simulator, Digital Display \u0026 Adjustable Hole Height","description":"\u003cstrong\u003eLUTIFIX 5-Hole Spark Plug Tester is a bench tool that compares five spark plugs at once and simulates engine RPM (200–9999) to help diagnose ignition strength safely and quickly.\u003c\/strong\u003e\n\n\u003cp\u003eThis compact, plug-and-play tester is built for technicians and enthusiasts who need a fast, visual way to evaluate spark plug condition and ignition coil performance on 12V gasoline and diesel engines, motorcycles, and small engines. With an adjustable test-hole height, variable simulated RPM, a clear digital readout, and a protective cover, the unit is designed to reproduce real running conditions while keeping hands and fingers away from high-voltage arcs.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the LUTIFIX tester reveal weak or failing spark plugs?\u003c\/h3\u003e\n\u003cp\u003eThe tester runs the new reference plug alongside up to four suspect plugs under identical simulated engine speeds, letting you compare spark intensity and consistency at a glance. Because you can increase the simulated RPM, you’ll observe how gaps and worn plugs behave under higher demand.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompare five plugs simultaneously for direct visual assessment.\u003c\/li\u003e\n  \u003cli\u003eAdjustable copper-ring sockets ensure reliable contact with different plug lengths.\u003c\/li\u003e\n  \u003cli\u003eHigher simulated RPM magnifies weak-spark symptoms for easier detection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I replicate different engine conditions with this tool?\u003c\/h3\u003e\n\u003cp\u003eYes — the device simulates engine rotational speed from 200 up to 9,999 rpm, so you can test ignition at idle, cruising, and high-rev conditions. The LED digital display shows the set frequency in real time, enabling repeatable checks and documentation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWide RPM range (200–9999) to mimic varied engine loads.\u003c\/li\u003e\n  \u003cli\u003eSimple push-button controls for precise frequency adjustments.\u003c\/li\u003e\n  \u003cli\u003eDigital readout provides accurate, repeatable RPM settings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the tester safe and easy to use in a busy workshop?\u003c\/h3\u003e\n\u003cp\u003eSafety and speed were prioritized: an ABS protective cover shields the operator from accidental contact with the arcing area while still allowing clear observation. Operation is straightforward — insert a known-good reference plug, place the test plugs, power the unit, and adjust the RPM settings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRemovable protective cover reduces risk of unintended touch.\u003c\/li\u003e\n  \u003cli\u003ePlug-and-play workflow minimizes setup time and training.\u003c\/li\u003e\n  \u003cli\u003eIndicator lights and digital display give immediate operational feedback.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat connectors and spark plug types are compatible?\u003c\/h3\u003e\n\u003cp\u003eThe tester’s knob-style copper rings let you raise or lower each socket to match a wide range of spark plug thread lengths and electrode positions. It supports common 12V car and motorcycle spark plugs, including those used on crankshaft and small diesel ignition systems where applicable.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eKnob-adjustable copper ring sockets for varied plug heights.\u003c\/li\u003e\n  \u003cli\u003eCompatible with most 12V gasoline and many diesel spark plug formats.\u003c\/li\u003e\n  \u003cli\u003eWorks for passenger cars, motorcycles, trucks, and small engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The LUTIFIX 5-Hole Spark Plug Tester is aimed at professional mechanics, garage owners, vocational students, and committed DIYers who perform recurring ignition diagnostics and need a quick comparative tool. If you frequently swap or test spark plugs, tune engines, or troubleshoot misfires, this unit speeds diagnosis, reduces downtime, and helps prioritize parts replacement. It is not a substitute for in-vehicle diagnostic equipment when ECU-level data or waveform analysis is required, but it is an effective visual and functional test to flag weak plugs or coils before deeper electronic testing.\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 tester simulate engine speeds for high-rev checks?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it simulates 200 to 9,999 rpm so you can assess spark behavior across idle to high-rev conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will it fit different spark plug lengths?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — knob-adjustable copper-ring sockets raise or lower to accommodate most common 12V spark plug heights.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"LUTIFIX","offers":[{"title":"Default Title","offer_id":48080862740638,"sku":"B0FJY72BJ7","price":76.69,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/lutifix-front-view-five-sockets.jpg?v=1785791071","url":"https:\/\/northtrailauto.ca\/products\/lutifix-5-hole-spark-plug-tester-200-9999-rpm-simulator-digital-display-adjustable-hole-height","provider":"North Trail Auto","version":"1.0","type":"link"}