1990 V8Q, 60k kms. started missing. New plugs, dist. caps, filters- no help. O2 sensor checked OK, temp normal, no fault lights on. Average round town fuel consumption (as shown on trip computer) has gone from approx.18-20 to 26-27 L/100Km.(Can. metric system) Any ideas/assistance would be most appreciated. Richard Lee (rlee@julian.uwo.ca)