4 3 Vortec Distributor Cap Problems

4 3l vortec distributor cap failure the distributor cap failing is a common problem across all vortec engines.

4 3 vortec distributor cap problems.

To verify vortec engine distributor problem set the code you simply remove the distributor cap. I only get. The last cap only lasted 3k before it started mifiring. Gm has a technical bulletin included in the new cap that speaks of a lack of ventilation which can cause pre mature corrosion of the cap.

I show you the difference between a good distributor and a bad one. Vents are plugged easily and cause white brown cap dust and green black rotor issues moisture gases corrosion all directly related to poor running and the p0300 because the distributor cant vent correctly. The a c hose above the cap deposits water on the cap as well on models with the hose routed over the cap. The vortec distributor is responsible for providing the ignition coils with the electricity required to power the spark plugs and create combustion.

In addition you ll also see damage to the distributor rotor. Your vehicle may make some very strange noises if the distributor rotor and cap are malfunctioning specifically because the cylinders will try to fire but fail. 4 3 distributor cap issues 08 22 06 05 05 am post 989299 in response to hdmk i had this exact same issue on a 96 and never found the actual cause of the problem. I went through many caps both aluminum and brass inserts new wires new dist plugs coil but nothing fixed it.

I show you the difference between a good distributor and a bad one. When you look at the spark plug wire terminals you ll see unusual wear patterns. It recommends taking out the wire screens located somewhere on the base of the distributor. The issue stems from failure of the housing that in turn allows the distributor shaft bushing to wear out.