confirm your header bolts are tight and your gasket is good. this includes looking from underneath the car while it is running. It's arcing because it has burned through already. This time I replaced all of the spark plugs and plug wires. They are usually quite audible. The wires were old so i just replaced the spark plug wires. Estimated Ship Date: Tomorrow if shipped by air. Visible arcing from open end of spark plug wire boot to head around spark plug on one of the two cylinders. Basically, there are three spark plug wire types, but more on that later. i am going to order spark plug wires today. This happens only at WOT. This time I replaced all of the spark plugs and plug wires. Replace the wire, then wrap it. 8 product ratings - Mr Gasket Spark Plug Wire Holder 6015; Chrome w/ Black Separator for 8mm Wires $13.88 Trending at $15.53 Trending price is based on prices over last 90 days. I shortened the wires and fixed the problem. which ones did you get? and there was in fact a concentrated blast of fire being blown on the boot! I hate to say it, but the only cause of that is poor wire quality. just ordered an indentical set. it worked great for me. Thought the problem was solved until today. This makes your car run rough and can affect your gas mileage. i tried wrapping the boot in a piece of leather that i cut off a welding bib. JavaScript is disabled. 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. The easiest solution is to buy a better set of quality wires. Taylor Cable 79614 409 Spiro-Pro 10.4mm Ignition Wire Set Blue For Vehicles w/LS Truck Headers 11.75 in. It's not normal - or safe - for your plugs to arc or spark. What heads are you running? The center wire got stuck on the end of the boot when the wires were put together. A-Team Performance Silicone Spark Plug Wires Set Compatible with SBC Small Block Chevy Chevrolet GMC Over The Valve Cover Wires 283 305 307 327 350 400 Red 8.0mm 4.5 out of 5 stars 75 $34.99 $ 34 . The faults are an electrical failure and current leakage. You are using an out of date browser. Installed them and been driving on them for a little while. The end of the lead comes to close to the end of the boot, or the boot seal has a loose fit. The electrical circuit breaks at the point where the metal contact of the wire is connected to the conductive housing and other components of the ignition system, for example: I was standing on the left side, I looked at the coil packs and spark plug wires and seen the arcing of the spark plug wires where they start the weep up the the coil. but im wondering if i shoukd order them with 45* or 90* boots? … I ran those boots laying right on the headers with no problem. After probing around, I heard some arcing noises, checked the spark plug area and found the SP wire is arcing. I know right wtf MSD! The wipre assembly comes off very easily and then you can just reach back over the plenum and reach the plugs/wires. I have hooker super comps and afr 195 heads. To change the rear wires/plugs just take off the top alternator braket and remove the wiper assembly. With a bad spark plug, the vehicle will halt and continue. Motorsport wires are notorious for having this problem. 135 Deg. http://item.mobileweb.ebay.com/viewitem?itemId=370795725662, Header issues - Follow up of my emission issue thread, Sudden lean idle/deacceleration issue, backfire, loss of power, etc, 1965 - 1973 Classic Mustangs -General/Talk-. You are using an out of date browser. I had one ford racing wire shorting, I couldn't tell till I grabbed the top of the distributor. if you hear a ticking sound look at that cyl. JavaScript is disabled. Headers suck Spark Plug Wire Thermal Sleeve, Titanium Protect-A-Wire, 1,800 degrees F, Slide-over, Glass Fiber, Gray, 25 ft. Well, I ordered some new Ford Motorsport spark plug wires off of amazon. You can test some types of spark plug wires with an ohmmeter. Just make sure you push them over the boot all the way down to the head. i still see the charge going from header to the boot. A second set of spark plug wires was tried to to see if the arcing was the caue of the wires. Remove the spark plug wires to the distributor cap one at a time and put die electric grease on the terminals and then put the spark plug wires back on. What are the signs of spark plug wires failure? Two weeks later started to misfire again. I saw lightning jumping through the #5 plug boot to the header. There could be a crack in the cap, but most of the time the spark occurs due to lack of connection. Plug Boot 409 Spiro-Pro 10.4mm Ignition Wire Set … BTW you'll have to replace that wire now. guess ill order some of those covers. you can mist the wires/plugs with water in dark condition and look for arc. The spark plug wire is arcing for there is a least path of resistance on the distributor cap. Length, Kit. I saw that the plugs that were arcing before to headers weren’t anymore. Yes, the wire was connected to the plug correctly. Find out why this happens, and what you need to do when you notice that your plugs are arcing … I see polaris plug wires are about $25 each. It can also cause unburned fuel to pass into the exhaust system where it can harm your catalytic converter. lol But one wire is arcing on a header and the other looks like it's arcing to the block or the metal part you put the wrench on to tighten or loosen the plug with. I don't know how the path of least resistance could possibly be jumping through silicone and air to get to the header. If that looks okay I would buy some thermal protection sleeves to provide extra heat and/or contact protection for the wires. Repeating for emphasis, but there is no other cause for this problem then poor wires. 25hp water-cooled Kohler Aegis. did not work. They seemed like they were made of a lot denser material. the headers are bbk shortys. Bought a set of high temp boots on eBay. Is there a possible reason/problem with the engine causing this to keep happening? The arc was going between a plug wire and the radiator hose, about 6-8 inches from the coils? could this cause my car to break up past 5k rpm? JBA Headers W0861 - JBA Headers PowerCables Spark Plug Wire Sets Spark Plug Wires, Powercables, Assembled, 8mm, Spiral Core, Red, Chevy, GMC, 8.1L, Set Part Number: JBA-W0861 It looked like the #5 was the main problem again. http://www.summitracing.com/search/...k-Plug-Wire-Heat-Shield-Sleeves/?autoview=SKU. if it turns out to be a bad wire, then replace wires but first confirm wtf the problem is. A boot may help a little bit, but you're better off getting creative with plug wire looms and zip ties to hold it out of the way. stock heads. Almost anyone with headers on their car, truck or racecar has experienced burned spark plug wires or has melted through a spark plug boot or two. A poor acceleration is a quick way to tell you that the spark plug wire is faulty. Find out why this happens, and what you need to do when you notice that your plugs are arcing or sparking. Cutouts, rough running during acceleration - Help please down to the boot all way... 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