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FOXWELL ST201 Automotive Smoke Machine Leak Detector with Built-in Air Pump, 0.8-1.2 Bar High Pressure Emission Vacuum Fuel Exhaust EVAP Smoke Machine Leakage Detection, Auto Smoke Tester for Cars

  • Based on 118 reviews
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Availability: 20 left in stock
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Arrives Tuesday, Jun 16
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Color: Shop Series - Built-in Air Pump


Features

  • Warm TipsDon't forget to claim your 15% pro-motion.
  • Built-In Air Pump True Plug-and-Go Mobility AnywhereSkip the compressor and start testing the moment you connect power. The integrated high-output pump provides steady airflow instantly, making this smoke leak detector ideal for garages, mobile mechanics, and roadside checks. Lightweight and portable, it delivers professional-grade diagnostics in driveways, shop bays, and on-site service calls without extra tools or setup time.
  • Precise Pressure Range (0.8-1.2 Bar) Safe, Accurate Leak TestingModern vehicles need controlled testingnot excessive pressure. This smoke testers precise 0.81.2 bar range mirrors real engine conditions, exposing leaks without stressing EVAP lines, turbo couplers, intake seals, or sensors. Enjoy consistent, repeatable, damage-free diagnostics with a automotive test tool engineered for todays complex emissions and boost systems.
  • Advanced Heat Control Stable, Dense Smoke for Long SessionsExtended diagnostics require stable output, and the variable-frequency heat control keeps smoke dense, consistent, and protected from overheating. A 10-minute auto cycle with instant restart ensures nonstop workflow for shops handling multiple vehicles, large EVAP systems, or deep turbo checks. Built for mechanics needing reliable, long-duration performance in daily use.
  • High Efficiency Design Low Oil Use, Low Heat, Low Battery DrawUsing only about 3ml of oil per cycle, this smoke leak detector runs cooler, cleaner, and more cost-effectively than traditional testers. Intelligent power management reduces battery strain during long sessions, while the durable build supports daily use by DIYers and technicians. Enjoy lower costs, reduced heat load, and dependable operation in every diagnostic session.
  • Simple Plug-and-Play Workflow Pro Accuracy for Any Skill LevelJust add oil, connect power, and begin testingno experience required. The FOXWELL ST201 stores easily yet delivers shop-grade accuracy for EVAP, turbo, intake, vacuum, and exhaust systems. Whether youre a beginner or a seasoned mechanic, you get fast, clear, confident diagnostics that remove guesswork and deliver professional results every time.

Manufacturer: ‎FOXWELL


Brand: ‎FOXWELL


Model: ‎‎Foxwell ST201 Smoke Tester Automotive


Item Weight: ‎4.09 pounds


Product Dimensions: ‎4.13 x 4.13 x 6.77 inches


Item model number: ‎‎Foxwell ST201 Smoke Machine for Cars


Manufacturer Part Number: ‎FOXWELL ST201


Date First Available: October 31, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jun 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
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  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Extremely effective
Color: Shop Series - Built-in Air Pump
Super cool and extremely effective.. This is so inexpensive to have laying around when you need it.. I find it very useful in detecting ANY leaks in Exhaust and intakes, Vacuum lines, AC ducts, you name it. You'll find a dozen reasons to use it all around the house. I showed it in a Facebook post and Nobody knew what it was, Everyone thought it was an awesome diagnostic tool. ... show more
Reviewed in the United States on April 24, 2026 by Bob Enos

  • Buy this product it is too useful not to have
Color: Shop Series - Built-in Air Pump
Buy this if you work on your own vehicles. Great value a land easy to use. It works great for finding leaks of any kind. I have used it multiple times I even had a hood slammed on it and it still works great. It will save you time and money for sure
Reviewed in the United States on December 10, 2025 by Ben Holmes

  • Holy smokes y’all..!
Color: Shop Series - Built-in Air Pump
Hot dang, this here car smoker’s a real ripper! It’s puffin’ out smoke like a chimney on a cold mornin’, rootin’ out them sneaky leaks in yer car’s hoses faster’n a coon dog chasin’ a squirrel! Simple as a sack o’ taters, and it’ll sniff out every dang hole for ya.. yeehaw, this thing’s the cat’s pajamas! ... show more
Reviewed in the United States on July 22, 2025 by Ammar

  • Fog leak test
Color: Shop Series - Built-in Air Pump
Product worked great and worked fast, very easy set up and if you had a leak you would know immediately. The only thing is the I though was a downside was you have to go to the store and buy mineral oil, and it doesnt mention if it has included but, the product itself was excellent and worked great.
Reviewed in the United States on March 30, 2026 by Hector Corral Jr

  • Very disappointed
Color: Shop Series - Built-in Air Pump
I purchased last year but didn't end up using at that time due to change in plans, unfortunately today I had a need/use for it , only to find that it doesn't work right out of the box ? apparently I should have tried it out at the time I received it! Oh well , to late now , another piece of amazon garbage ! ... show more
Reviewed in the United States on November 8, 2024 by Amazon Customer

  • Effective and easy to setup and utilize
Color: Shop Series - Built-in Air Pump
Easy to use with either baby oil or smoke liquid. Quickly produces smoke and has enough pressure to drive the smoke the entire length of the car in only 20-30 seconds. Able to identify the evap leak in under two minutes, which because of the location I likely would never have found via only a visual inspection. ... show more
Reviewed in the United States on November 3, 2025 by Bluto

  • what a nifty little tool
Color: Shop Series - Built-in Air Pump
I have used it exactly twice and both times it did exactly what I needed it to. It will generate smoke that lingers and if you correctly plug up the obvious vacuum ports on your intake and feed the smoke in, then that smoke is going to come out all the non-obvious places. I was a little disconcerted to see smoke come out of the bearings for the throttle shaft, but that will indeed happen if you leave it long enough to build up positive pressure in the manifold because I managed to plug up all the actual leaks. So be sure to use common sense while interpreting your results. -CTH ... show more
Reviewed in the United States on July 10, 2024 by cth350

  • Worked great, highly recommend, great value Worked great, highly recommend, great value
Color: Shop Series - Built-in Air Pump
I was having codes P0172 and P006A, and suspected a leak somewhere. I had never used a smoke machine before, but this little unit made it easy. It took a minute or so, but sure enough smoke came wafting up from behind the bumper. I had to take off the bumper to see the problem… the nuts securing the piping from the turbocharger to the intercooler had worked loose. Easy fix, but you have to know where to look. This machine did the trick. Highly recommend, and a great value. Very easy to set up and use. Only ding is the poor English in the user’s manual, but the info you need is there and clear enough. ... show more
Reviewed in the United States on February 3, 2024 Reviewed in the United States on February 3, 2024 by Dave R

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