{"product_id":"upgraded-sp02-ancel-sp20-spark-plug-tester","title":"(Upgraded SP02) ANCEL SP20 Spark Plug Tester","description":"\u003cp\u003e\u003cstrong\u003eThe ANCEL SP20 is a dual-socket, one-button spark plug tester that lets you visually compare spark performance on 12V gasoline engines safely through a clear protective cover.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you troubleshoot rough idles, hard starts, misfires or poor acceleration, a fast visual check of spark quality can save time and parts. The SP20 provides a simple, repeatable way to inspect two spark plugs side-by-side under the same simulated conditions, so you can spot weak or intermittent sparks before replacing ignition components.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the ANCEL SP20 reveal weak or failing spark plugs?\u003c\/h3\u003e\n\u003cp\u003eBy creating a controlled gap and allowing you to observe the electrical discharge, this tester shows spark intensity and stability visually. Comparing sparks makes it easier to detect reduced voltage output, inconsistent firing, or arcing that indicates aging or damaged plugs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDual sockets let you test two plugs simultaneously for direct comparison.\u003c\/li\u003e\n  \u003cli\u003eVisible spark window shows intensity, color and consistency of discharge.\u003c\/li\u003e\n  \u003cli\u003eOne-push activation produces a repeatable test without engine RPM adjustments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the SP20 safe and simple enough for home mechanics?\u003c\/h3\u003e\n\u003cp\u003eThe unit includes a transparent protective cover that helps isolate the high-voltage area while keeping the spark visible, reducing the risk of accidental contact. Operation is straightforward: insert plugs, close the cover, press the button, and observe the result — no complex setup or tuning required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClear cover protects the user while allowing visual inspection.\u003c\/li\u003e\n  \u003cli\u003eSingle-button control removes need for technical adjustments.\u003c\/li\u003e\n  \u003cli\u003eCompact footprint works on a garage bench or workbench safely.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engines and spark plugs does this tester work with?\u003c\/h3\u003e\n\u003cp\u003eThe SP20 is designed for standard spark plugs used in 12V gasoline engines, covering cars, motorcycles, ATVs, lawn mowers, generators and most small-engine equipment. It accepts plugs with an insulator diameter up to 13 mm; very short plugs may not fit properly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with most 12V gasoline engine spark plugs (up to 13 mm insulator).\u003c\/li\u003e\n  \u003cli\u003eSuitable for automotive, powersports and small engine maintenance.\u003c\/li\u003e\n  \u003cli\u003eNot intended for exceptionally short spark plugs — verify size before testing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat practical benefits will I notice during diagnostics?\u003c\/h3\u003e\n\u003cp\u003eUsing the SP20 speeds up troubleshooting by showing whether a plug produces a strong, steady spark or is weak and erratic. That clarity helps you decide whether to clean, gap, or replace plugs and prevents unnecessary part swaps that increase repair time and cost.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eQuickly isolates ignition-related problems during routine checks.\u003c\/li\u003e\n  \u003cli\u003eHelps compare new versus aged plugs under identical conditions.\u003c\/li\u003e\n  \u003cli\u003eReduces guesswork, saving both diagnostic time and replacement parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The ANCEL SP20 is made for DIY enthusiasts, home mechanics and professional technicians who service 12V gasoline equipment and want a fast, visual way to evaluate spark plug performance. It’s useful for anyone maintaining cars, motorcycles, ATVs, lawn mowers, generators or small engines who needs a compact, easy-to-use tester to confirm spark condition before investing in replacements or more invasive repairs.\u003c\/p\u003e\n\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 the SP20 test two plugs at once?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — its dual-socket design lets you inspect two spark plugs side-by-side for direct comparison.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will it work with my lawn mower spark plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Generally yes for 12V small gas engines if the plug insulator is up to 13 mm; very short plugs may not fit.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ANCEL","offers":[{"title":"Default Title","offer_id":48086999400606,"sku":"B0F2MX6H6W","price":31.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ancel-sp20-front-view.jpg?v=1785912916","url":"https:\/\/northtrailauto.ca\/products\/upgraded-sp02-ancel-sp20-spark-plug-tester","provider":"North Trail Auto","version":"1.0","type":"link"}