Redline Speed Smoke Operation Manual page 11

TURBO/HIGH PRESSURE
Cab Leak Testing
Test for driver cabin exhaust / carbon monoxide infiltration, wind and water leaks.
Key on / Engine off, turn circulation fan to its highest speed making sure that the fresh air option is used
(NOT recirculate). If vehicle has dual air option, also initiate fan, selecting highest fan speed setting. The
circulation fan produces a positive cabin pressure. Make sure all windows and doors are completely
closed. Install SmokeMeister
sure test is performed in a "still air" environment such as in a closed building. Using SmokeMeister
Wand proceed around vehicle cabin laying down fluffy vapor on all seams, seals and joints looking for
vapor deflection from escaping air (leaks). Where vapor is deflected is a visual conformation of a leak.
Seal leak and retest entire cabin for further leaks. To check for doghouse engine cover leaks, turn off
fans, install wand tip adaptor into wand, and inject vapor underside of doghouse while someone inside
cabin looks for leaks. Retest after repairs are performed to confirm proper repair and seal.
Coolant System Leak Testing
Cooling system leak testing can be performed two ways
Use Speed Smoke to quickly and easily find cooling system leaks either with decay testing or using
visible vapor. First, attach provided cooling system adaptor to pressurized coolant bottle or radiator at
cap. For decay testing, simply pressurize coolant system with air-only to manufacturers recommended
test pressure, typically 15 PSI (1 BAR). Turn off flow control valve to lock out system and watch for decay.
Inspect visually for leaking fluid. Alternatively, to perform leak test using vapor, first drain the cooling
system of all fluid. Introduce pressurized vapor in to cooling system at no more than the manufacturers
recommended test pressure and use inspection light to find leaks. Retest after repairs are performed to
confirm proper repair and seal.
IMPORTANT NOTE
Many leaks in heavy duty systems are considered "normal" or "within tolerance." For example,
!
a weep hole in a muffler is acceptable. DO NOT assume every wisp of vapor represents a failing
component. Check with vehicle manufacturer before replacing suspected failed part.
Wand to end of Vapor hose. Set test pressure to 3 PSI (0.2 BAR). Make
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TESTING FOR LEAKS
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