Today, let’s dive into spark plug wires and the developments in technology that these simple conductors have experienced over the years. Route them in the position you want them for your specific application and then cut them to the specific length necessary for your set up. Different wire styles will dictate how long to leave your stripped areas; double-crimped wires need far less exposed core than a fold-back style. The next item to consider is wire diameter. “What I find to be the easiest way to do that is to install all the wires on all the spark plugs, route them the way you want to up to the distributor, bring the wire up to the terminal end cap that it’s going to connect to, then give yourself about half an inch of extra room for movement, and cut the wire.” Incorrect mixing and matching can cause running issues, destroyed ignition components, and decreased voltage supplied to the plugs. 1. 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. The spark plug wire’s “boot” is located at the rubber housing at each end of the wire. (But you should normally try and do that pretty gently.). take a good transformer. Check the owner’s manual for the replacement interval. 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. Here you can see I have stripped my wire. When installing the spark plug end of the wire, push the wire on the spark plug while holding the end of the boot. At its basic level, the spark plug wire exists solely to transmit electricity from the coil or distributor to the spark plug. Return any unused item within 90 days for a full refund. Most “modern” (or at least late-ish) motorcycles utilize silicone jackets for this purpose. However, buying a custom set can get pricey. Editor's Pick: ACDelco. The shiny thing sticking out of the engine block after you remove the wire from the spark plug is the terminal of the spark plug. Your crimpers will have a stripper attachment in the dye assembly to make this possible. There are some things you may want to consider. Tools make this job a snap. Spark plug – any will work. Spark plug wires deliver thousands of volts (up to 50,000 or more) to the spark plugs. Spread it around here, then we will go ahead and slide the boot over the end of the wire assembly to the point where you will be able to see the terminal through the end of the boot. This was the first thing Lance asked me when I set off to write this article. When you take the wires out of the box, the wires are going to be pretty long to start with, and you are going to notice that the boots are already going to be assembled on the wire for the spark plug ends. Watch now! You should be aware that spark plug wires can help your engine get all the spark the coil can throw at it, but they won’t increase anything — at best, all wires can do is reduce losses. The reason for this is so that you can cut them to the specific lengths necessary for your application. As mentioned earlier, reducing a plug wire’s resistance can make a measurable difference in performance. Photo by Lemmy. Accel 8.8mm Universal Spark Plug Wire Kits, Sumax 8mm Build-Your-Own Spark Plug Wires For Harley, premade spark plug wires right off the shelf, You moved ignition componentry (Did you relocate the coil and now need longer wires? Photo by Lemmy. This provides a good mechanical and electrical connection. When I am looking for copper-core stuff for a magneto bike, I often hit up tractor parts places; they're often way cheaper than the exact same thing from a motorcycle shop.) Early spark plug wires are usually seven mm or so, and later ones are often eight mm. To make spark plugs, manufacturers first extrude or cold-form steel to the proper hollow shape (1). Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Halfway done! When your car refuses to start, it might not a battery fault but, a bad spark plug wire. Lightly coat the threads of the spark plug with a dab of oil from the oil dipstick. For street cars, a higher quality spark plug wire can make a significant difference. The set of dies loaded in my tool here has three separate functions from left to right: crimping tool, stripping tool, and double-crimp die for double-crimp wire terminals. Low compression can cause a plug to … This site uses Akismet to reduce spam. your ZillaCash Rewards on a future order with us! Spark plug wires can’t add horsepower (despite what some may claim), but they can adversely affect your vehicle’s performance. As a last step, take a final check by looking in to the boot. Slide the terminal in place with the conductor wire folded over and positioned inside the saddle. How it works: Sign in There are three steps to assembling your custom wire set. customer service page for more details. Insure it is seated all the way in. RevZilla offers shipping to France for a flat rate of $30 US dollars on your entire order! To do this successfully, they need to be covered in thick insulation to prevent high voltages jumping off the wire before it reaches the spark plug and a rubber boot at each end. Here’s the moment of truth. They should also have good … They have to go back the same way. If the plug was far enough away from metal nothing would have happened. Order Spark Plug Wire Set for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Length is important, as well. Any thoughts? We'll do the front cylinder first. Also remember that if buying wires of a uniform length (as opposed to one long length of bulk wire) that you can trim down, but not add on. Spark plug wires usually rest in wire looms or standoffs. Hagerty’s DIY series is your handy-dandy, easy-to-use video guide to tackling small projects any classic car or truck owner might encounter during the course of ownership. Boots protect your terminals from dirt and the elements, and they also protect you from getting a snappy buzz should you come into contact with a terminal! Earn Now that your custom wire set has been assembled, they are ready to be installed on your vehicle. Before you attach the boot to the spark plug, apply some silicone lubricant to the inside of the boot; then push the boot over the exposed terminal of the new plug and press it firmly into place. Before we can do this, it is important to understand what type of crimped ends you are using there are two versions available, you are going to have a single crimp end and a double crimp end. Starting at the post marked #1 on the distributor cap and moving counter-clockwise, the order is 1-3-7-2-6-5-4-8. They also come in different colors and styles. Please. Usually this isn’t specified, but larger wires generally offer less resistance and thus better transmission of electricity to the sparkin’ plug. The boot removal tool makes the job easier and prevents damaging the plug itself. Instead, it is just placed right into the connector and you want it to coincide with these two tangs here on the connector itself. There are fairly inexpensive plastic tools that work in a vise that are serviceable (sorta). Older motorcycles usually used copper-core wire, which offers little resistance, and you may see carbon-core wires, as well. The best way to make sure everything jives is to use what’s recommended by the component supplier(s), be they OEM, aftermarket, or a mish-mash, and understand that conflicts may arise. However, these wires can generate all sorts of electrical “noise,” so suppression core wires were developed. Harley-Davidson will even sell you a 10 mm spark plug wire, and I’ve seen 12 mm wires available. Custom plug wires can make any engine bay look neater, and create a more efficient power distribution than stock. Bad spark plug wires can cause a decrease in engine performance, decrease fuel economy, and can even cause hard starting (a condition where it is difficult to start your vehicle when the engine is \"cold\"-hasn't run-for more than 12 hours), or stalling. Spark-plug wires belong to that group of overlooked components that serve a critical purpose. Your crimp tool will have a dye in it designed specifically to show you the depth of which the wire should be stripped. Photo by Lemmy. Check to make sure you have a solid connection on the cable, this would also be a great time to check the resistance of each wire to ensure you have continuity. Note that sometimes this is easier before the terminals are installed, and sometimes easier after. Harley-Davidson will even sell you a 10 mm spark plug wire, and I’ve seen 12 mm wires available. Best Spark Plug Wire … Strip the outer silicone layer, leaving about ¾-inch to 1-inch of conductor wire visible. But let’s be realistic: There’s a hell of a lot of Harleys and old machinery still running around, so this is still a pretty relevant topic for many riders. Next, these blanks undergo further forming operations such as machining and knurling (2), and then the side electrode—with only a partial bend—is attached (3). Hagerty’s DIY series is your handy-dandy, easy-to-use video guide to tackling small projects any classic car or truck owner might encounter during the course of ownership. I think he assumed you can go get premade spark plug wires right off the shelf. If, however, you were installing a 90 degree boot, those are definitely easier done after the fact. The car should have a smooth and steady idle, but the engine may develop a rough idle if the spark plug wires are bad. By nature, we love customization—whether it’s a custom paint job, one-off aftermarket rims, or a radical resto-mod project. The spark plug wire sets from this brand consist of a Kevlar-reinforced core and a high temperature “Class-E” silicone jacket that makes it resistant to damages caused by heat, cold, oils or chemicals. Earlier motorcycles used cloth-covered wire. The spark plug wire’s “boot” is located at the rubber housing at each end of the wire. Fiddle for something that will work. ACDelco offers a variety of spark plug wire sets for a wide range of applications and vehicles. Hard starts. An ignition system is only as strong as the weakest part. Important, yet un-sexy. Whether you are running a set of wire looms or are going to zip tie the wires in place on your application, or whether you’re going to run them under or over the exhaust manifolds, it is best to go ahead and set up the wires and do basically a dry fit. Hot rodders don’t live in a “one-size-fits-all” world. Performance plug wires must exhibit both low resistance to make sure the maximum spark power gets to the plugs. The ragged little bit of sheathing bugged me a little...Photo by Lemmy. To do this, it is best to have some type of non-flammable lubricant or maybe some liquid soap to go ahead and lubricate the pieces so they go together very easily. See what our customers are saying about us: Earn $5 for every qualified $100 you spend. If you’ve got an older metric machine utilizing resistor caps and spike-style coils I mentioned earlier, this may be the time where you screw down the spiked point into the female receptacle. Spark plug wires don't lead an easy life, they are exposed to high temperatures and high voltages and a lot of strain and bending during plug changes and other work around the wires. The type of terminal is important. They need to be replaced after 80.000 miles or 100.000 if you get the ceramic units. Match what you have on the bike if appropriate, or run a string in the routing you want, remove from motorcycle, and measure. Connect a spark plug wire between the number one cylinder and the distributor's number one terminal. Harley-Davidson will even sell you a 10 mm spark plug wire, and I’ve seen 12 mm wires available. Tell us what you love or what we need to fix. See our with needle-nose pliers. It is also, however, a fairly specific job, relegated at this point mostly to antique motorcycles and Harley-Davidsons. 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. Note that I have also folded the wire back here to accept its terminal. That’s why it’s important to select a good quality set of spark plug ignition wires to deliver juice to your spark plugs.. This is actually pretty similar to the wires used on late-ish metric motorcycles, albeit with a different terminal style. And then there are the big-buck, “do-it-right” tools that cost a lot because they’re worth it. You typically want to crimp down twice or you will end up buckling it on the end and will probably have to twist it off. However, many enthusiasts often overlook the importance of their plug wires. Changing the routing from the original OEM routing can lead to early spark plug wire failure. And, of course, there are all manners of colors available. Spark Plug Wires. 6. These can be manipulated in the spark plug, the wire, the coil, and the plug boot, both intentionally and unintentionally. Replacement spark plug wires … You’re looking for the sweet spot between “Man, that doesn’t even fit!” and “Ack, it fell off!” You can adjust the tension of the terminal a bit (carefully!) Please reference our International Shipping Policy for details. I’m gonna list off a few important questions you’ll likely ask, but it’s not comprehensive. But it’s not true for every bike. Thanks and cheers—–John, Your email address will not be published. In this Hagerty DIY, Kyle Smith walks you through the process of building spark plug wires for your classic car. Put boots on the terminals. Connect a spark plug wire between the number one cylinder and the distributor's number one terminal. Commonly, you’ll see 90-degree, straight (sometimes called 180-degree) and 135-degree terminals. On my straight-style connectors, it kind of didn’t matter, so I installed them before I crimped. Worn spark plug wires and boots can start to leak voltage to nearby engine parts, causing arcing and creating performance problems. Spark Plug Wire Accessories. Working on one wire at a time saves confusion. I’ll take some spray lubricant typically and will spray the inside of the boot as well as the end of the wire so they do not bind up against one another. Replacing the spark plug wires is usually an easy remove-and-replace task, unless that fine automobile in the garage or yard has long since dropped off the list for fancy store-bought wire sets. Next, you will want to fold the wire lead over and place the terminal end on the wire making sure the wire lead coincides with the backside on the terminal. (There’s a layer of braided fiber between the core and the jacket, but that’s not likely to come into play on your wire selection.) Grasp the spark plug wire by the cap, not the wire. Step 5. That’s what a spark plug wire is—a conductor. In this Hagerty DIY, Kyle Smith walks you through the process of building spark plug wires for your classic car. Photo by Lemmy. Step one is to cut the wires to length, step two is to crimp the ends on, and step three is to install the boots. 6. When you take the wires out of the box, the wires are going to be pretty long to start with, and you are going to notice that the boots are already going to … This is necessary due to the aging of the spark plug wires from exposure to extreme temperatures (hot and cold), engine chemicals (oil, grease, coolant, etc.) How to Make Spark Plug Wires. The following situations call for immediate replacement of spark plug wires: Vibration damage – Constant wear and tear caused by engine vibration can loosen the electrical connection at the spark plug. There may be a metal shield present on … $5 for every $100 you spend on eligible items and brands. 5. Sounds obvious, but don't forget to check. ). 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