appreciate the reply. im not getting any spark. i did a couple of tests i know 12v is getting to the distributor connector. i did the resistance checks on the coil and they are within spec i did the power source line voltage to the igniter check and im not getting any voltage. i bought a cheap dizzy on ebay but they sent me a dizzzy for the 4A-LC the only difference i could see is the vacuum advvance unit is turned in a different direction. i had the car in op for almost two years wennt to go turn her on after an engine rebuild and no spark.