Operation CHARM: Car repair manuals for everyone.

Technician Safety Information

^ Never operate the engine with the air intake hose disconnected from the turbocharger. If the air intake hose is disconnected from the turbocharger while the engine is running, and a fluorescent light happens to be shining into the turbocharger housing, it may appear that the turbine is not spinning. The appearance that the turbine is not moving is an optical illusion created by the frequency of the fluorescent light in relation to the rpm of the turbine (similar to the effect a timing light has on a serpentine drive belt. Do not attempt to touch the turbine, as serious personal injury could result.