Ignition Timing

Operate engine until cooling fan comes on. Locate ignition timing adjusting connector under right side of dash or at center console. Connect terminals of connector using a jumper wire. Refer to Fig 1 .
Connect timing light. With engine at idle, Red mark on crankshaft pulley should align with pointer. See Fig 2 . If Red mark and pointer are not aligned, adjust timing. See IGNITION TIMING table.
Adjust ignition timing by turning adjusting screw on ignition timing adjuster. See Fig 3 . Remove control box cover. Using a 3/16" drill bit, drill out 2 rivets from adjuster. Remove cover.

Turn adjusting screw counterclockwise to retard timing or clockwise to advance timing. After adjustment, install cover to ignition timing adjuster using new rivets. Remove jumper wire from ignition timing adjusting connector.

IGNITION TIMING (Degrees BTDC @ RPM)

Application

⁽¹⁾ M/T

⁽²⁾ A/T

Coupe & GS Sedan

13-17 @ 630-730

13-17 @ 580-680

Sedan "L" & LS

13-17 @ 600-700

13-17 @ 550-650

⁽¹⁾	Manual transmission in Neutral.

⁽²⁾	Automatic transmission in Neutral or Park.

Fig 1: Locating Ignition Timing Adjusting Connector (Typical)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: Locating Ignition Timing Marks (Typical)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 3: Adjusting Ignition Timing (Typical)

Courtesy of AMERICAN HONDA MOTOR CO., INC.