LaCrosse FWD L4-2.4L (2011)
2. Install the valve spring (3) and retainer (2).
3. Compress the valve spring using the valve spring compressor.
4. Install the valve spring keepers (1).
5. Disconnect the air hose and air hose adapter.
6. Remove the EN-43649 - compressor and EN-43649-10 - adaptor set from the cylinder head.
7. Install the spark plugs. Refer to Spark Plug Replacement (See: Tune-up and Engine Performance Checks/Spark Plug/Service and Repair).
