ABSTRACT
The aural assessment that was made in assessing the engine behaviour at idle speed should direct attention towards the engine and preparation to conduct further examination should take place. Part of this preparation will be to decide which tests and equipment to use. As the engine problem is an apparent loss of compression it will be necessary to conduct appropriate tests. These tests may include:
Preliminary visual inspection of vehicle and engine On-board diagnostics (OBD), PO code Cylinder balance Cylinder compression.
