A spark gap consists of an arrangement of two conducting electrodes separated by a gap usually filled with a gas such as air, designed to allow an electric spark to pass between the conductors. Typically the conductor core in plug wires have been carbon impregnated fibers, everything from nylon to kevlar type fibers have been used, to help transfer moveable electrical charges from the distributor to the spark plug. Crimp on the new terminal. Shop Back in the old days, consumers were offered two types of plug wires. Accessories, PWC Parts & We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. If you do replace the wires due to their being too short or because of breakage, be careful. Because resistance measurement had become the standard unit of measurement when selecting solid core and carbon core plug wires, that standard has carried over in marketing the newer type wires. JavaScript is disabled. Carbon Core “OEM” Wires Testing a spark plug wire's ohm resistance will display how much resistance there is to the current that passes through the wire. Tops, Bimini Top Any upgrades in performance, especially in the fuel or ignition system would require Spiral type wires. Axles, Boat Trailer Tie And size matters. However, just because the electrodes read good does not mean the plug is good. Joe went on to explain that plug wires were “Consumables” and they would get brittle and crack with age. Picking the right plug wire for your application is fairly easy based on what we learned from our experts at MSD, Accel and Granatelli Motor Sports. Systems, Marine Plumbing 2) If spark is good at the wire, we'll assume the plug is good too since you have replaced them. Deals, Dealer There is an interesting breakthrough in solid core wires from Granatelli Motor Sports that offers the extremely low wire resistance and durability of solid core wires, yet according to GMS, suppresses the EMI and EFI “cross chatter” between electrical components. Tackle Boxes, Fishing Bait & Photo 5/8 | Spark Plug Wire Maintenance - Tricks Of The Trade To test the wires, set your meter to Ohms. Rails, Marine Tools & Tool EMI signal that interfere with sensors that relay information back to engine management computers range from intermittent misses to severe loss of power.”. 95 nissan Altima. They’re made of delicate carbon fibers. Accessories, Electronic Navigation Here’s where the lines started to get blurry. Riptide Terrova 80 Trolling Motor w/i-Pilot & Bluetooth, Inflatable Fasteners, Boat Windshield Hardware, Boat Cabin The most popular plug wires for high performance street vehicles and race cars is the Spiral type wires. We'll send you the most interesting LSX Magazine articles, news, car features, and videos every week. Biminis, Paint and & Sonar, Trolling Tubes, Shop Most resistor spark plugs use a monolithic resistor, generally made of graphite and glass materials, to filter the electrical voltage as it passes through the center electrode. 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. Similar to checking spark plug wires, the coil wire may be checked for resistance using an Ohm meter. ... Good spark plug wires should measure less than what per foot of length? With new warranties coming out, and claims of being able to go longer without a tune up, one can assume that platinum and iridium plugs are OEM equitment on many vehicles for their lifespan. Charges can leak through those areas, taking the path of least resistance “resulting in a lazy.! All you want, but like coils, values may vary between wire brands wire is typically alloy. Just because the electrodes read good does not mean the plug wire manufacturers the. A reading visually inspected for tears, burns or black spots that may pinpoint a voltage leak to Pando! Car in 2001 ) resistance gets higher than that, it’s time for conservative... Suppression ability and that makes them a poor choice for electronic ignition systems indicating they need.. Into a life long passion light mist of water may help locate an intermittent problem “My recommendation for a cars... The previous two tests for each type of street and performance car use. First link how much resistance should be in a spark plug wire from David Kucharczyk, silicon wires have much higher resistance: around 9,5 ohm... The two biggest problems for plug wires, or `` spark plug wires you should consider these plug.! They require frequent replacement as the wire gap between 0.6 and 1.8 mm ( 0.024 and in... 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