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Vapour Check vFlow - The Diagnostic Smoke Unit®

  • Variable flow and leak size indication
  • Smokeless test mode
  • OEM approved diagnostic smoke machine
  • Uses special UV smoke tracer dye fluid
  • Simple one button operation
  • Fast setup and smoke generation
  • Detects numerous different types of leak
  • Non-Toxic and safe to use
  • Can use Nitrogen gas for testing EVAP systems
  • Only needs a connection to a 12V battery and an air line
  • Complete with UV lamp and viewing glasses
  • Saves time and money
  • Very economical (300 tests per bottle)



The Vapour Check unit produces an OEM approved vapour from a specially formulated non-toxic, non-corrosive compound (UltraTraceUV®). The introduction of this smoke into a closed system in a vehicle will almost immediately pin-point any and all leaks, simply view the smoke exiting wherever there is a leak! In addition, you will see the UV fluorescent dye deposited at the exact location of a leak, all accomplished safely with the engine off!

Using the flow indicator you can check for leaks without using any vapour at all, the vFlow also lets you limit the smoke flow to pinpoint the exact location any leaks faster.

The UV smoke-solution will last for hundreds of tests and is user refillable.


Does not use baby oil!
The Vapour Check does not use baby oil, no vehicle manufacturer in the world approves introducing baby oil vapor into their vehicles. In fact even baby oil manufacturers clearly state: "It [baby oil] is NOT intended to be used nor should it be used in or in conjunction with any mechanical or automotive component or equipment"

Test Safely
We support the safer testing practices of using an inert gas such as nitrogen as the carrier gas for the smoke vapour, when testing a vehicle’s EVAP system. Virtually all vehicle manufacturers that have approved the use of smoke vapor technology recommend or require the use of nitrogen.

What can you do with a diagnostic smoke machine?

EVAP Leaks This technology was specifically designed and is OEM approved for vehicles' EVAP systems.
Vacuum Leaks Hoses, lines, valves, diaphragms, choke pull-offs, heater controls, EGR hoses and controls.
Exhaust Leaks Manifold cracks, EGR valve feed tubes and passages, exhaust pipes, catalytic converters, boxes, heat control valves and crossover passages.
Oil Leaks Sump gasket, valve and cam cover gaskets, hoses and seals, cam and crankshaft seals, oil cooler and lines.
Under Dash Leaks HVAC hoses and tubes, control solenoids and diaphragms.

Brake Servo
System Leaks
Hoses, check valves, diaphragm & chamber seals.
Turbo & Super Charger Leaks Seals, hoses, ducting, intercooler, housing seal and flange connector.
Head Gasket
To adjacent cylinder, to cooling system, to atmosphere, etc.

Wind & Water
Around windscreen, windows, doors and sunroof seals.

Component Testing Bench test water pumps and other components before installation. Test again after installation but before coolant and oil is added to the engine.
Air Injection
System Leaks
Control valves, diaphragms, solenoids, tubing, pump, vacuum controls and back pressure check valves.


Adaptors included:

  • Standard vehicle service port adaptor
  • Schrader removal tool
  • Cap plugs set
  • Smoke diffuser
  • Cone adaptor
  • Compressed air fittings





  • 12 Volt supply 15 Amps
  • Compressed air 50 to 150 PSI
  • Nitrogen gas regulated 50 to 150 psi
  • 34 x 33 x 23 cm
  • 4.4 kg
  • 10 litres / min vapour volume
  • 2.4 m hose length


  • UV tracer fluid

Included in the kit:

  • Main smoke/vapour unit
  • Hose
  • Blocking caps
  • Smoke adaptors
  • 2 bottles of UV tracer dye smoke fluid
  • UV lamp (with laser pointer & LED torch functions)
  • UV viewing glasses
  • Instructions




NA - no downloads available



Vapour Check
vFlow Brochure
Vapour Check




SPD Product Code Description
1442-9100 Vapour Check vFlow Smoke Diagnostics Unit




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