Leak Test
WARNING: This page is about a different variant/trim than selected.
NOTE:
An air leak that appears as small bubbles or foaming is normal.
- Turn EN 46091-1
air valve ON and perform the following procedure :
- Inspect for air leaks by listening for excessive hissing sounds.
- Inspect for air leaks by using a pump spray bottle to apply a soapy solution, while observing for excessive soapy bubbles at all of the following engine locations :
- Charge air cooler pipes/hoses connections
- Charge air cooler core
- EGR valve gaskets
- EGR cooler bypass valve gaskets
- EGR cooler gaskets
- Exhaust manifold gaskets
- Turbocharger gaskets, inlet and outlet connections
- Intake manifold gaskets
- Exhaust system and after treatment components
- If any abnormal leaks are found, replace the affected gasket or component as necessary.
- Retest the engine system for air leaks. There should be no abnormal air leaks.
- If no other air leaks are found, assemble the vehicle. Remove the tester and adapters by performing the following procedure :
- Slowly bleed the air from the cooler by depressing the relief valve on the adapter.
- Remove the air hose, gauge/regulator assembly, and both adapters.
Carefully remove the retainer clips (1) from the OEM clamp before install.
- Connect the CAC inlet hose to the turbocharger with an OEM clamp, refer to Charge Air Cooler Inlet Air Hose Replacement .
- Connect the nitrogen oxides catalytic converter flange, refer to Nitrogen Oxides Catalytic Converter Replacement (LWN) .
- Install the coolant recovery reservoir, refer to Coolant Recovery Reservoir Replacement .
- Install the air cleaner assembly, refer to Air Cleaner Assembly Replacement .
- Install the engine cover, refer to Engine Cover Replacement .
- Clear all DTC information with a scan tool.