Taylor offers multiple styles of plug wires in different diameters, spark plug wire boot angles and lots of colors. A: The 8mm is sufficient for most street applications. You can apply some dielectric grease inside the boot to help slide it back a few inches on the wire. It's a very good policy to carefully wipe the new spark plug threads with Never Seize Compound. Same senario. The spark plug boot must be firmly connected to the spark plug in order to create the spark. Replacing bad spark plugs is probably a project you can tackle on a weekend. If you see any, opt for a new distributor cap. Some instructions say to pull the uncut wire through the boot then strip and crimp the wire end and pull it back into the boot and others say to crimp the terminal on the end of the wire first and then slide the boot over it. Easy step by step guide on how to replace automotive engine spark plugs, though appearances may vary, the process is similar for most engine's. Compare the old wires to the new wires to find the one with the exact same length and/or match the wires’ numbers if available. Continuity. However, this procedure will be similar with a variety of different cable ends. Then, use a socket wrench to loosen the spark plug so you can remove it. We installed plug boots and terminal ends that are used for socket style distributor caps. Achieving Success . Not to mention replace the 2 ignition coils ~24.00 a piece) since the replacement boots (~9.00 a piece) are not readily available around here. DLE 20 spark plug boot and cap replacement I seem to recall seeing a step by step (with photos) instruction post on how to replace a damaged boot/cap with a new boot/cap kit from RCEXL. To change spark plugs, start by carefully pulling out the first spark plug by the boot, which is the connector that connects the spark plug wire to the engine. 2 of the 3 that I pulled ht boots tore off in the head and were stuck to the plug. Wipe the ID of a new set of AC-Delco or Delphi boots with silicone ignition grease. To my surprise from the screw to the part that clips onto the top of the spark plug, open. Before you do, though, you must be sure you have the tools needed to change spark plugs. The spark plug wire’s “boot” is located at the rubber housing at each end of the wire. It may have been in the DLE 55 thread or the DLE 30 thread. The boot removal tool makes the job easier and prevents damaging the plug itself. Next, screw a new spark plug that's the same size as the old one into the hole you removed the old one from. 1998 Buick Century Spark Plug Replacement Time To Replace Spark Plugs. So I tear apart number number 2. After replacing spark plugs and wires, inspect the distributor cap for signs of damage. Our ThunderVolt 50 10.4mm wire is especially recommended in high-boost/extreme-cylinder-pressure applications but will work fine on any engine. 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