See Figures 1 and 2
Honda recommends that the ignition timing be checked every 60,000 miles (96,500 km) and adjusted (if necessary).
On all Civic series engines the timing marks are located on the crankshaft pulley, with a pointer on the timing belt cover. All are visible while looking at the driver's side of the engine compartment. The timing is checked with the engine warmed to operating temperature-176°F (80°C)-idling in Neutral (manual transaxle) or Drive (automatic transaxle), and with all vacuum hoses connected.
See Figures 3 through 6
- Stop the engine and connect a tachometer to the engine. The positive lead connects to the distributor side terminal of the ignition coil and the negative lead to a good ground, such as an engine bolt.
On some models you will have to pull back the rubber ignition coil cover to reveal the terminals.
- Following the manufacturer's instructions, install a timing light to the engine. The positive and negative leads connect to their corresponding battery terminals and the spark plug lead to the No. 1 spark plug. The No. 1 spark plug is the one at the driver's side of the engine compartment.
- Make sure that all wires are clear of the cooling fan and hot exhaust manifold.
- Set the parking brake and block the front wheels. Start the engine. Check that the idle speed is set to specifications with the transaxle in Neutral (manual transaxle) or Drive (automatic transaxle).
- If the distributor is equipped with a vacuum advance mechanism, disconnect the hose(s), plug it (them).
At any engine speed other than specified, the distributor advance or retard mechanisms will actuate, leading to an erroneous timing adjustment.
- Point the timing light at the timing marks.
- If necessary to adjust the timing, loosen the distributor hold-down bolt(s) and/or nut. Slowly rotate the distributor counterclockwise to retard the timing or clockwise to retard the timing while observing the timing marks.
Some models are equipped with two bolts, others are equipped with a bolt and a nut, which may be loosened to adjust ignition timing. If there is a smaller bolt on the underside of the distributor swivel mounting plate, it should not be loosened, unless you cannot obtain a satisfactory adjustment using the upper bolt. Its purpose is to provide an extra range of adjustment, such as in cases where the distributor was removed and then installed one tooth off.
- To complete the adjustment operation, tighten the hold-down bolt, taking care not to disturb the adjustment. If equipped with a vacuum advance mechanism, unplug and reinstall the hose(s).
See Figures 7 through 10
- Start engine and allow to reach normal operating temperature (cooling fan comes on).
- Remove the YEL rubber cap from the ignition timing adjusting connector. This is located at the rear of the engine compartment on 1988-89 models or under the right side of the dash on 1990-91 models.
- Connect a jumper wire between the BRN and GRN/WHT terminals of the connector.
- Connect a timing light and check timing using the red timing mark.