If the coil is in the truck. Pull the high voltage wire from the center of the dist. cap. Hold the end near the block and have some one crank the engine. It should spark over half an inch away. If it has no spark or just a small spark it's shot. Careful how you hold the wire or you will get shocked. If it's out of the truck. Most parts stores will test them.


if it dosen't need fixed, break it