Crankshaft Position (CKP) Sensor

On engines with distributor, CKP is located in front engine cover and is perpendicular to crankshaft target wheel. Air gap between sensor and target wheel is preset and not adjustable. The sensor must be exactly perpendicular to target wheel with no alteration in air gap. See Fig 1. On engines with distributorless ignition, CKP is a magnetic sensor which protrudes into the block within about .050" from the crankshaft reluctor. See Fig 2.

Fig 1: Locating CKP At Front Of Engine

Courtesy of GENERAL MOTORS CORP.

Fig 2: Locating CKP At Side Of Engine Block

Courtesy of GENERAL MOTORS CORP.