1990 Chevy 350 Distributor Cap Wiring Diagram

By | December 19, 2022



The Chevy 350 engine, one of the most popular small block V8s ever made, is a reliable, powerful engine that is found in millions of vehicles. But like all engines, it requires regular maintenance to ensure optimal performance. One of the most important parts you need to check, especially if you're having ignition problems, is the distributor cap wiring diagram.

Whether you have an '88, '90, or '94 Chevy 350 engine, understanding your distributor cap wiring diagram can save you time and money when dealing with ignition issues. When checking your distributor cap wiring diagram, the first thing to look at is the ignition coil. The ignition coil is responsible for supplying high-voltage sparks to the spark plugs, so any problems with the coil can cause misfiring and other engine problems.

The next item to check on your distributor cap wiring diagram is the distributor cap itself. This is the part that covers the spinning armature and distributes the sparks from the ignition coil to the spark plugs. If there is any visible damage to the distributor cap, such as cracks or arcing, the cap should be replaced.

Next, check the rotor in the distributor cap. If the rotor isn't turning when the engine is running, it could cause a misfire in the spark plugs. A broken or worn-out rotor will also reduce the engine's power and efficiency.

Finally, inspect the spark plug wires. Over time, the spark plug wires can become worn-out, which can increase the resistance in the electrical circuit. If the spark plug wires are cracked, frayed, or broken, they should be replaced.

By taking the time to understand the distributor cap wiring diagram on your Chevy 350 engine, you'll be able to make the necessary repairs quickly and easily, ensuring that your engine runs smoothly and efficiently.


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