Spark Plug Wire Position On Distributor Cap

Each contact point on the distributor cap is connected to a plug wire that takes the spark to the spark plug.

Spark plug wire position on distributor cap.

The points of the crown are where the distributor is connected to the spark plugs by spark plug wires. Most small block chevy s use a hei distributor which stands for high energy ignition on a small block chevy v8 engine the distributor cap firing order is in a clockwise rotation. See onallcylinders firing order cheat sheet for installing the plug wires in the correct order. So a six cylinder car will have six contacts on the distributor.

June 20 2015 10 34 06 am on my 65 the wires are installed in correct firing order on cap but i noticed that plug wire 4 is not in same position as the shop manual next to cap window. These parts can wear out over time and replacing your spark plugs spark plug wires distributor cap and rotor are all parts of a good tune up. Lift the old rotor off and install the new one making sure it is aligned the same way the old one was. Note the position of the distributor s rotor the vehicle should not be moved and the engine should not be turned over until the installation is complete.

Picture the distributor cap as a crown that a king would wear. Step 5 recall whether your rotor moves clockwise or counterclockwise and connect remaining spark plug wires one at a time following the firing order located in the manual. Remove the distributor cap leaving the spark plug wires attached. Transfer spark plug wires one by one onto the new cap following their location in the old cap as a guide and installing them in the same position in the new cap.

For those confused about where spark plug wires connect to the distributor cap here s a couple of pictures. Photo on left is the standard lucas vacuum advance distributor with side entry distributor cap. We started with number one and worked our way around the distributor cap clockwise using a set of summit spark plug wires. Ht spark plug wire positions ig 114.

Our small block chevy firing order is 1 8 4 3 6 5 7 2 so that s the order in which we will install the plug wires. This is done through the spark plug wires. V8 distributor cap spark wires off by one position on. Photo on right is my mallory dual points distributor with stop entry distributor cap and no vacuum.

The spark plugs are screwed into the cylinder head which means that the end of the plug is sitting at the top of the cylinder where the action happens. In most cases it doesn t matter where the number one position is on your distributor cap as long as the plug wires are in the correct firing order. If converting from a point type distributor label the. Connect a spark plug wire between the number one cylinder and the distributor s number one terminal.