Continuity. Before you do, though, you must be sure you have the tools needed to change spark plugs. If you see any, opt for a new distributor cap. Achieving Success . Taylor offers multiple styles of plug wires in different diameters, spark plug wire boot angles and lots of colors. 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. They'll slide off the plugs easier the next time you need to do any ignition work. Same senario. 1998 Buick Century Spark Plug Replacement Time To Replace Spark Plugs. Number three, yup you guess it the boot is open. The boot removal tool makes the job easier and prevents damaging the plug itself. 2 of the 3 that I pulled ht boots tore off in the head and were stuck to the plug. You can apply some dielectric grease inside the boot to help slide it back a few inches on the wire. What is everyone's trick to sliding the boot over the terminal end of "cut to fit" spark plug wires? We installed plug boots and terminal ends that are used for socket style distributor caps. The spark plug wire’s “boot” is located at the rubber housing at each end of the wire. The spark plug boot must be firmly connected to the spark plug in order to create the spark. Next, screw a new spark plug that's the same size as the old one into the hole you removed the old one from. Replacing bad spark plugs is probably a project you can tackle on a weekend. After replacing spark plugs and wires, inspect the distributor cap for signs of damage. So I tear apart number number 2. 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. To be on the safe side it's best to toss these boots every 100,000 miles. So I decided to ohm out the boot as well. However, this procedure will be similar with a variety of different cable ends. It's a very good policy to carefully wipe the new spark plug threads with Never Seize Compound. Then, use a socket wrench to loosen the spark plug so you can remove it. It may have been in the DLE 55 thread or the DLE 30 thread. So I ended up having to figure out a way to get them and the plugs out. HMMM. Wipe the ID of a new set of AC-Delco or Delphi boots with silicone ignition grease. A: The 8mm is sufficient for most street applications. 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. 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. 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. 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