I rebuilt the motor and it's has a rattle sounds like lifters. When i unhooked the spark adavnce wire to set timming the rattle stops. I put new distributor in and set timming to (0,4,6,8) and when i hook the wire back up it still rattles. I replace knock sencer and ran vales a few times. The spark adavnce wire is on the passage side on fire wall be hide a black cover right?