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HD Vapor Pro Smoke Machine

High Pressure Leak Detector For Heavy Duty Vehicles

Excessive regen is not only frustrating for drivers and service crews, who don’t want the downtime, but can cause your DPF to fail before it’s time. This results in more downtime and money out to replace DPFs that could have lasted longer. In recent tests, it was determined that 89% of DPFs fail due to upstream component faults.

With the Dinex HD Vapor Pro, designed specifically for heavy duty vehicles, service teams can find the cause of excessive regen before it becomes an issue. The HD Vapor Pro simulates a high-pressure boost load, testing the entire system for faults with the engine safely off.

Smoke Machine


  • 60" wand

  • Cooling system adaptor

  • Extra OEM-approved vapor producing fluid

  • Pressure-O2 & temp port adaptors

  • Smoke nozzle

  • Spare quick connect couplers

  • Two adaptors: one for block-off and one to seal with smoke pass through tube


  • Cabin leaks

  • Charge air cooler leaks

  • Exhaust / Intake system leaks

  • Seals, gaskets, hoses, fittings, etc.

  • Cause of dangerous fumes inside cabin

  • Cause of excessive DPF regeneration events

  • Turbo / boost leaks

  • Wind / water leaks


  • Specifically for heavy duty

  • Compact, rugged design at 19lbs

  • Runs on compressed air

  • Powered by 110-250 VAC or 12 VCD

  • Free of dyes and other contaminants

A Video of the Smoke Machine in Action

Look Deeper: PV = nRT

To see how leaks in upstream pipes affects proper DPF function, we just need to look at the physics. Take a look at the Ideal Gas Law. In a manufactured structure such as a truck exhaust system, there are constants. Gas volume (V), gas mass (n), and gas constant (R) are predetermined by the exhaust makeup. However, pressure (P) and temperature (T) are variables in this system. If the pressure is low due to leaks in the upstream pipe, then the temperature will, by the laws of physics, be lower too.

Regen cannot take place if the system can’t get up to temperature. The system will continue to attempt regen cycles, but won’t be able to complete a regen due to lower temperatures.

Issues Diagnosed by HD Vapor Pro

  • 26% Clamps / Tubing to and from the CAD

  • 17% V-Clamp / Gaskets / Exhaust Tubing Cracks on DOC/SCR

  • 14% Turbo Housing Leaks

  • 11% Charge Air Cooler

  • 9% DPF Gaskets and Housing Failure

  • 8% Blocked Pressure Differential Switch Tubes

  • 6% V-Clamps on Turbo or Cracks

  • 3% Water/Exhaust Intrusion

  • 3% Exhaust Flange Cracks and Gaskets

  • 2% EGR Cooler Coolant Leakage (Pinholes)

  • 1% Intake Gaskets

Pie Chart
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