Ignition - Engine Detonation & Timing Adjustment

Number 85-6(Gasoline)-46 Date 8/85
Subject: DETONATION ON 1.6L ENGINES (VIN CODE C)

1985 1000
Some 1985 1000 models with 1.6L engines may exhibit engine detonation. On vehicles where the procedure outlined in the shop manual did not eliminate the detonation, retarding the base engine timing up to 4~ is permissible. Base engine timing is now 8~ BTDC. With the maximum recommended timing change, base engine timing will be 4~ BTDC. This change will alleviate the detonation.