Make sure the lambda system is working, the "dwell" should be fluctuating indicating a working Lambda system and a good O2 sensor. You could try the "dwell" method of adjusting the mixture screw or go to a station with an exhaust gas analyzer. Also make sure the idle system is running by pulling the plug off the idle motor and the engine should run lousey and die. Gas mileage is affected by a lot more than just the motor, underinflated tires, slipping clutch, dragging brakes, alignment, and driving style, all can have a negative effect on gas mileage. You should also make sure the advance system is hooked up correctly and working (vacuum and mechanical). David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, Soma576@xxxx wrote: > List, > > well i wound up getting my timing checked and my timing was off by 6 degrees. > as soon as that was adjusted, my car has ceased idleing erratically when > warm. now i have NO complaints with driveability!!! finally after 3 years > everything seems to be working beautifully... the car starts up immediately