GM 96067332 DISTRIBUTOR, Ignition

Turn the engine off and then, using your wrench or your hands, unscrew the distributor cap and the rotor from the engine. With a feeler gauge, ascertain the clearance between one of the teeth of the pole piece and the pick-up coil, on a vacuum / centrifugal advance distributor. If at all you are handling an electronic spark control distributor, it is advisable to measure the gap between a ridge of the signal rotor and the generator assembly. Measure the air gap with the help of a caliper, and take the value from the specifications manual. If this is so with the air gap, then the electical technician may have to correct the position. In order to change the air gap on a vacuum/centrifugal advance distributor you should first remove the module/igniter and then unscrew the two screws which are typically mounted behind the pick-up coil. Slide the pick-up coil assembly till the gap is ideal and tighten the screws again. For the electronic spark control distributor the generator assembly can be adjusted by loosening the retaining screws for the spark gap. Using a screwdriver make the distance between the pick-up coil/generator assembly to come with in specified range the screws are tightened and checked for its gap again. Place the module/igniter if available, the rotor and the distributor cap.

Mark the edge of the distributor base directly below the rotor tip and align it with the rotor. Also, mark the distributor base and cylinder head for correct installation.