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Engine Electrical > Firing Orders Firing Orders To avoid confusion, always replace spark plugs and wires one at a time. Replacing spark plugs and wires one at a time will help prevent incorrect wire routing or cross-firing resulting from an incorrect firing order. If more than one wire is to be disconnected at a single time, be sure to tag all of the cables to assure proper installation. Also, be disconnecting the cables, compare the firing order and routing to these diagrams and note any differences for installation purposes. This will help assure the wires are properly installed.

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Engine miss, spark knock, buck/jerk, surge and other driveability concerns may be caused by induction crossfire. This occurs because of improperly routed spark plug wires. ACTION: If spark plug replacement is performed, the correct firing order and spark plug wire routing is essential to prevent the possibility of induction crossfire between cylinders. Refer to the following procedures for inspection of the spark plug wire routing and firing order. Properly reroute the spark plug wires if required. FIRING ORDER ^ The firing order for 1987-1993 vehicles is 1-5-4-2-6-3-7-8. If # 7 and # 8, or # 2 and # 4 spark plug wires are routed next to each other at the separation bracket, an induction crossfire condition can occur. ^ The firing order for 1994 vehicles is 1-3-7-2-6-5-4-8. On these vehicles the # 1 and # 3, or # 5 and # 6 spark plug wires must be separated to eliminate the possibility of an induction crossfire. ^ To eliminate the possibility of the coil wire becoming disconnected, route the coil wire under the spark plug wires at the distributor cap. 1987-1993 VEHICLES

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REMOVAL 1. Remove the wet cowl. 2. Disconnect the spark plug wires from the ignition coil. CAUTION: When removing the spark plug wires a slight twisting motion will break the seal and ease removal. 3. Disconnect the ignition coil electrical connector. 4. Remove the mounting screws and remove the ignition coil. INSTALLATION 1. To install, reverse the removal procedure.

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IGNITION COIL REMOVAL/INSTALLATION 1. Disconnect the negative battery cable. 2. LH: Remove the plug hole plate. (See TIMING CHAIN REMOVAL/INSTALLATION). RH: Remove the dynamic chamber. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION). 3. Remove in the order indicated below. 1. Connector 2. Ignition coil 4. Install in the reverse order of removal. Apply a light film of silicon brake caliper grease and dielectric compound to INTAKE-AIR SYSTEM REMOVAL/INSTALLATION

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TILT SWITCH Removal & Installation 1. Remove combination switch. Remove in order indicated in illustration. See Fig. 17 . 2. Reverse order to install. Tilt Switch Removal Note 1. Remove screws. Release tabs of tilt switch from turn lever boot. 2. Slide tilt switch in direction indicated by arrow, then remove it along turn lever. See Fig. 18 . After installing tilt switch, route harnesses of combination switch as shown in illustration. See Fig. 19 . Band Clip Installation Note 1. Set harness length from shaft contact portion as shown in illustration. See Fig. 20 . 2. Install band clip as shown in illustration. See Fig. 21 . TILT RELAY Removal & Installation 1. Remove in order indicated in illustration. See Fig. 22 . 2. Install in reverse order of removal.