On VR6 Volkswagen engines, the ignition system is run through a coil pack, a small box located on the driver's side of the motor that helps distribute the spark. This plastic box isn't cheap, and worse yet, it's prone to breaking posts, making the engine misfire and run on one fewer cylinder. You can either fix it with epoxy or swap it out for a new one, but either way, first you have to remove it.
Pop the bonnet and locate the coil pack on the driver's side of the engine. This is a small black box with all of the spark plug wires leading into it.
Label each spark plug wire using the permanent marker and the masking tape. To do this, pair up each plug wire with each post on the coil pack, and label each pair with the same number. For example, the plug wire plugged into the top right post would be labelled "1," and the post would have a "1" label on it as well. It's not important which cylinder these plug wires actually control, just their location on the coil pack for reinstallation. Repeat this process for every plug wire on the coil pack.
Pull off all of the spark plug wires using your hands by gripping at the base of the spark plug wire and tugging backward. Unclip the wiring harness leading into the coil pack by pushing on the tab in the middle using your thumb. Then use the 3/8-inch ratchet, extension and sockets to unbolt the coil pack from the motor.
Proper labelling with make the installation and reinstallation process a lot easier. Be very meticulous with how you do your marks, and the process will go a lot more smoothly.
Tips and warnings
- Proper labelling with make the installation and reinstallation process a lot easier. Be very meticulous with how you do your marks, and the process will go a lot more smoothly.