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This kit can be used with an air compressor to test for vacuum leaks, boost leaks, and external coolant leaks on the 1.4L Turbo LUV, LUJ, and A14NET engines. This kit applies to the following vehicles with the 1.4L Turbo:
2011-2016 Limited 1.4L Cruze
2011-2018 Chevy Sonic/Aveo
2015+ Chevy Trax
2015+ Buick Encore
2011+ Opel/Vauxhall Corsa (Turbo only)
2009+ Opel/Vauxhall Astra J (Turbo only)
2010+ Opel/Vauxhall Meriva B
2011+ Opel/Vauxhall Zafira Tourer
The boost leak test kits plug into the intake manifold while capping off the turbo. Make sure the clamp on the turbo cap is tight. You will need an air compressor regulated to no more than 25 psi (or be very careful opening the valve) in order to boost leak test this engine. To pressurize the cooling system to imitate full operating temp running pressure, some additional fittings are included to adapt the kit for coolant testing use. The boost and coolant leak tester kit uses a high quality, accurate 60 PSI gauge with brass fittings and an air hose connection to test with and comes with everything pictured below. Note that the air tool plug used is a common M-Style plug that will need a compatible coupler.
Common areas to search for boost leaks:
- Turbo to charge pipe connection
- Charge pipe to intercooler connections (both sides)
- Intake manifold gasket
- Throttle body gasket
- Intake manifold check valve (see https://youtu.be/En4WO7DYsTk)
- Wastegate actuator hose
- Bypass valve hose (passenger side underneath intake manifold
- All sensors on the intake manifold and charge pipe
Common areas to search for coolant leaks:
- Crack in the surge tank/reservoir
- Water outlet
- Water pump
- Thermostat housing
Boost and vacuum leaks cause loss of fuel economy, rough idle, low power, and even stumbling and hesitation on acceleration. Coolant leaks are sometimes hard to track down if the system is not pressurized. This kit will help you identify the root cause quickly and effectively so you replace the right parts, the first time.
This video shows you how to boost leak test the 1.4L Turbo LUV/LUJ/A14NET engine.
This video shows you how to pressure test the cooling system on the 1.4L Turbo LUV/LUJ/A14NET engine.