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HOW TO DIAGNOSE EXHAUST LEAKS
This test is most effective when exhaust system is cold
Thermal expansion may cause small leaks to seal
1. Insert appropriate Adaptor into the end of the tailpipe
If the vehicle has dual exhaust with cross over system, plug the other
tailpipe to seal the system
2. Put Vapor Output Hose into Adaptor to introduce vapor into
the system
A hot catalytic converter may consume some of the vapor
All testing is performed with the engine off
HOW TO DIAGNOSE UNDER DASHBOARD LEAKS
Many vehicles have a common vacuum line, leading from the engine
compartment through the fire wall, under the dashboard
This line supplies vacuum to climate control functions and other vacuum-
operated systems
1. Disconnect the vacuum line under the hood at its source
2. Input vapor into the vacuum line
3. Observe the Flow Meter and Pressure Gauge while changing the climate
controls from heat to vent, to defrost, etc.
4. Change in the Flow Meter or Pressure Gauge's reading will indicate which
system is leaking
5. Set the climate control to the leaking system
6. Use provided Inspection Light to locate under dash leaks
Central locking system leak inspection is performed in the same manner
Activate control solenoids while introducing vapor into the system
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