Chevrolet Workshop Service and Repair Manuals > HHR L4-2.2L (2007) > Powertrain Management | Tune-up and Engine Performance Checks | Spark Plug | Component Information | Specifications | Page 6052

Compression Check > < Spark Plug|Specifications|Page 6051

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3. Install the ignition coils.

Powertrain Management
Tune-up and Engine Performance Checks
Spark Plug / Specifications
Page 6052

Compression Check > < Spark Plug|Specifications|Page 6051