Gas Mileage Issue

[bryan42688]

so im averaging about 20mpg if that car seems to run ok to me , 88 accord dx 4speed auto , new plugs wires cap rotor , ignigtor , new battery stage 3 vac removal stock steel wheels , all fluids are toped off , transmission was replaced last year so fluid was completely flushed then , any suggestions

[jzdude]

Put some Carb cleaner in gas tank and drive for 30 mins. Air filter? Check vacuum advance & ignition timing. Tire pressure?

[gfrg88]

I thought the vac removal wasn't too mpg friendly?

[bryan42688]

will do the carb cleaner and change air filter as it is kinda dirty , how do i chek the vacuum advance and ignition timing , tire pressure is a ok thanks alot

[jzdude]

Refer to manual
ignition timing: pg 766-768
vacuum advance inspection: pg 768

Shortcut for ignition timing: Warm up car, set parking brake (and wheel chocks the front wheels), and put the car in D. Use timing light and set the timing to 15 BTDC (the red mark with 15) with the vacuum advance hoses on. Take the hoses off and plug them with the sharp end of a pencil, read with timing light, and it should be around 4 BTDC eyeballed (a little bit above the T mark). If not, either bad vacuum advance or no/little vacuum from those two hoses.

[gfrg88]

o2 sensor?