Ignition Timing: RX7

NOTE: Before adjusting ignition timing, warm engine to normal operating temperature. Turn off all accessories. Place transmission in Neutral (M/T) or Park (A/T). Ensure idle speed is correct. See IDLE SPEED under IDLE SPEED & MIXTURE.

Connect a jumper wire between ground and Green test connector near battery. See Fig 1 . Connect timing light to leading spark plug wire (bottom wire) of front rotor housing.
If Yellow mark on pulley aligns with indicator pin, go to next step. See Fig 2 . See IGNITION TIMING SPECIFICATIONS - RX7 TABLE . If Yellow mark does not align with indicator pin, loosen Crank Angle Sensor (CAS) lock bolt. Rotate CAS until timing marks are aligned. Tighten lock bolt.
Connect timing light to trailing spark plug wire (top wire) of front rotor housing. If Red mark on pulley does not align with indicator pin, loosen CAS lock bolt. Rotate CAS until timing marks are aligned. Tighten lock bolt.

CAUTION: On RX7, ignition timing is set AFTER top dead center.

IGNITION TIMING SPECIFICATIONS

Application

Leading (Yellow)

Trailing (Red)

RX7 ⁽¹⁾

5 @ 750

20 @ 750

⁽¹⁾	Connect jumper wire between Green test connector and ground.

Fig 1: Locating Green Test Connector (RX7)

Courtesy of MAZDA MOTORS CORP.

Fig 2: Locating Ignition Timing Marks (RX7)

Courtesy of MAZDA MOTORS CORP.