OK, I have a 94 track 8 valve ,5 speed 2 door convert and I am only getting 12-13 miles per gallon.About 120-130 miles per tank. It has new O2 sensor,plugs,wires,coil,distributor,rotor,fuel filter,etc. It has 155,000 miles on it and runs great,Idles around 6-700 RPM. I recently fitted new 31's under it along with the lift, but i did not think my mileage would drop that much from 235's at 23 MPG to 12-13 with 31"s. Also one day it would not start at all and now it starts fine but I can hear a ticking sound coming from the top of the coil(that little black box). I think that is the igniter or spark control.
What do you guys think?
Here is a pic of the unit that is on top of the coil