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This item is NEW. 2026 model, Retails for $259 . Reasonable offers are welcomed, but low ballers will be blocked. Please do not make an offer if you have no intention of buying/paying, you will be reported and blocked. No returns due to discounted pricing. Once it Has been marked as “SHIPPED” there are no CANCELLATIONS. Thanks for looking.
2026 FOXWELL ST203 Automotive Smoke Machine Leak Detector
11.6-17.4 PSI, Dual Mode (Air & Smoke), Pressure Gauge & Flow Meter Show Leak Size, Built-In Air Pump, For Most 12V Vehicles
𝗦𝗧𝟮𝟬𝟯 | 𝗤𝘂𝗶𝗰𝗸 𝗢𝘃𝗲𝗿𝘃𝗶𝗲𝘄】Dual Mode (Air + Smoke) – Air mode pre-checks for leaks without wasting oil. Smoke mode pinpoints the exact location. Pressure Gauge + Flow Meter – See real-time system pressure and leak size. Know if it's a pinhole or a major crack instantly. Built-in Air Pump – No external compressor needed. Works with any 12V system. 10-Min Test Cycle + Instant Restart – Keep testing without waiting for cooldown. Fast, Dense Smoke Output – Produces thick, stable smoke in seconds. Safe for sensors and lines. Complete Kit – Includes 23-piece plug set, pressure gauge, flow meter, and all adapters. Ready to use out of the box.
【𝗪𝗵𝘆 𝗦𝗧𝟮𝟬𝟯 — 𝗝𝘂𝗱𝗴𝗲, 𝗠𝗲𝗮𝘀𝘂𝗿𝗲, 𝗟𝗼𝗰𝗮𝘁𝗲】Most smoke machines do one thing: blow smoke. ST203 does three — check if there's a leak (Air Mode + flow meter), measure how big it is (flow meter reading), and pinpoint where it is (Smoke Mode). Know before you fix. Verify after you fix. Covers turbo, intake, exhaust, vacuum, and fuel systems on most 12V gas and diesel vehicles. Built-in air pump, no downtime — ideal for busy shops and technicians who test multiple vehicles every day. Also great for advanced DIYers, car enthusiasts, and used-car inspectors who want professional-level diagnostics without paying professional-level prices.
【𝗙𝗶𝘅 𝗣𝗿𝗼𝗯𝗹𝗲𝗺𝘀 𝗙𝗮𝘀𝘁 — 𝗥𝗲𝗱𝘂𝗰𝗲 𝗖𝗼𝗺𝗲𝗯𝗮𝗰𝗸𝘀, 𝗜𝗺𝗽𝗿𝗼𝘃𝗲 Engine light, rough idle, failed emissions, loss of power, poor gas mileage — these are often caused by hidden leaks. Traditional diagnosis relies on guesswork and parts swapping, which costs time and money. ST203 injects visible smoke into sealed systems and locks onto the leak location in minutes. Fix it right the first time. Fewer comebacks, faster turnaround.
【𝗔𝗶𝗿 + 𝗦𝗺𝗼𝗸𝗲 𝗗𝘂𝗮𝗹 𝗠𝗼𝗱𝗲 — 𝗖𝗵𝗲𝗰𝗸 𝗙𝗶𝗿𝘀𝘁, 𝗧𝗵𝗲𝗻 with Air Mode to pressurize the system and watch the flow meter — if the reading drops, you have a leak. Then switch to Smoke Mode — dense white smoke escapes right at the leak point. The pressure gauge shows real-time system pressure, and the flow meter tells you leak size — high flow = big leak, low flow = tiny pinhole. No guesswork, no wasted oil.
【𝗧𝘂𝗿𝗯𝗼, 𝗜𝗻𝘁𝗮𝗸𝗲, 𝗘𝘅𝗵𝗮𝘂𝘀𝘁, 𝗩𝗮𝗰𝘂𝘂𝗺 & 𝗙𝘂𝗲𝗹 — 𝗙𝘂𝗹𝗹 𝗦𝘆𝘀𝘁𝗲𝗺 on most 12V gas/diesel cars, SUVs, light trucks, motorcycles, ATVs, boats, and snowmobiles. Complete professional kit includes 23-piece plug set, smoke hose, power cords, adapters, intake bladder, and more — ready to go to work right out of the box.For EVAP system testing, an additional EVAP Service Port Adaptor is required and sold separately.
