4 3 Vortec Distributor Cap Problems

Ran cylinder compression test and fuel pressure test and everything checked out ok.

4 3 vortec distributor cap problems.

The last cap only lasted 3k before it started mifiring. I have a ski boat with a pcm 2003 gm 5 7 350 ci marine motor that uses the vortec distributor cap it is flat and the plug wires come off of the sides. The issue stems from failure of the housing that in turn allows the distributor shaft bushing to wear out. It recommends taking out the wire screens located somewhere on the base of the distributor.

The vortec distributor is responsible for providing the ignition coils with the electricity required to power the spark plugs and create combustion. The distributor in a 1997 chevrolet blazer accepts the electrical charge needed for combustion and relays it to the six spark plugs in the 4 3 liter vortec v 6 engine in a specific order. I only get. 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.

Started replacing all items one by one until we discovered the distributor cap was causing the problem. When you look at the spark plug wire terminals you ll see unusual wear patterns. The distributor cap failing is a common problem across all vortec engines. To verify vortec engine distributor problem set the code you simply remove the distributor cap.

4 3l vortec distributor cap failure. I have a 3rd cap now with the same problems. 4 3 distributor cap issues 08 22 06 06 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. Replaced the distributor cap with a new mercruiser cap and had same issue again 2nd time out.