While you're there, buy yourself a spark plug wire puller for next time. Come to find out Cylinder #4 is misfiring. I was replacing the spark plugs on my wife's 97 Grand Jeep Cherokee Laredo when I accidently broke one of the wires. Shop O'Reilly Auto Parts for spark plugs, wires, and other ignition components for a complete tune-up or repair. what is up with that, concretejungle? Having a spark plug wire with bad insulation may not be as bad as a wire with a broken conductor. This is where the socket wrench fits for tightening and loosening the plug in its hole in the engine. In general, an ignition coil is a component that generates spark in an internal combustion engine. Replacing spark plugs and wires are part of a tune-up, so if your spark plugs need to be replaced, you should also consider replacing the spark plug wires. Worn spark plug wires and boots can start to leak voltage to nearby engine parts, causing arcing and creating performance problems. Looks like I will head to the pliers section of Home Depot, and prepare myself to get comfortable laying on top of the engine. Join Yahoo Answers and get 100 points today. That can happen with any spark plug but most frequently with the smaller 5/8" hex size. Put in new plugs and wires and she prrrrrs with joy. Upon pulling the spark plug, we can see that the center electrode is melted and fused with the ground (side) electrode. They were not toyota wires. This component is sometimes referred to as a spark plug coil because it is where the high voltage electricity required to jump the electrode gap of the spark plugs is generated. Corona stain is completely normal and should not be mistaken for exhaust gas blow-by or a broken seal inside the spark plug. You will need to put the boot on first on the wire, then uncrimp the brass or aluminum terminal with a screw driver off of the piece that broke off Strip off about1/4" of the silicone insulation from the good wire left so that you see. The boot will slip on easier with a little dish soap on the wire and boot first. Why not replace them? I used a long "dental pick" with a fish hook looking end. The only time I have ever encountered a broken spark plug tip, inside an engine, was when a customer brought his own sparkplugs in for me to install, after I rebuilt the transmission. You must log in or register to reply here. You then press the sharp 3/16" section into the wire. If they don’t come out with the coil, retrieve them with needle-nose pliers and replace them with new parts. JavaScript is disabled. I'm still on my original 93 wires. Find the spark plug wires and sets you need for low resistance and minimum spark loss at Summit Racing. Then you can get nw wires. Is it bad to leave your car running while refueling? You are using an out of date browser. Do not pull the wire portion as you can damage the wire which in turn will require a replacement. It may not display this or other websites correctly. I suggest you take it and get it fixed as soon as possible and I do not think it would be a good idea to take it on a long trip it will still run,not exploding or fire or anything,will lost much power,hesitation when accelerating,but very harmful to your catalytic converter,when engine misfired from no spark,the raw fuel will damage the very expensive component of the emission system. if the wire didn't actually break, but just came out of the rubber it should be fine. I wouldn't drive it unless you absolutely have to, and then only limp it a short distance home, as it won't be running well. First locate the spark plug wire which you would like to remove. He put in a helicoil and has been having this problem pretty much ever since. RTH: Spark Plug wire broke in half inside engine. I was replacing the spark plugs on my wife's 97 Grand Jeep Cherokee Laredo when I accidently broke one of the wires. The term spark plug coil can refer to a couple of different items. They have to go back the same way. At the end of the straight section of wire there is right angle bend and a short 3/16" section of wire with a sharp edge. Come to find out Cylinder #4 is misfiring. Can you tell who the medical student is here???? How do you think about the answers? Types of spark plug wires. Replace them before that happens. Spark plug wires can’t add horsepower (despite what some may claim), but they can adversely affect your vehicle’s performance. A visual inspection of the spark plug color, will display symptoms and conditions of the engine’s performance. You need to replace the wire. They were "upgraded" wires. Oh, and what make vehicle. For a better experience, please enable JavaScript in your browser before proceeding. Whether you’re seeking replacement wires or aftermarket performance wires, we have everything you need. Auto-ignition could be the reason, maybe your are using high octane gas or add to make hotter the temperature inside the cylinder. to check the electrical integrity of the wire, I guess the best you can do is put it back on and see what happens. COP ignitions are the most sophisticated systems. I had the same thing happen. Grab firmly onto the spark plug wire boot, then twist in either direction and pull off simultaneously. There should be a hole already in the wire. That’s why it’s important to select a good quality set of spark plug ignition wires to deliver juice to your spark plugs.. Fortunately, it's possible to repair damaged threads instead of scrapping the head. If a spark jumps from a plug wire to the test light at any point, this is an indication that the insulation has broken down, and the spark plug wire should be replaced. Gapping fine-wire spark plugs. If you don't replace it you will have one cylinder less to run your engine with ,causing you not to have the horsepower that you need to run the engine .I know it's not the best thing to do , but i have put the broken wire back together at less it will get some kind of power out of that cylinder. Remove the tool and the broken boot. like that. i am a car mechanic and your car can do that trip but it will consume more gas and shake a lil, but u can fix that in 5 min just get the wire from autozone for like 20$ and replace it by your self. Broken Spark Plug Wire? I'd try some of those really long needle nose pliers or some hemostats. wrap electrical tape around the rubber so that its sealed and get a new lead when you get to where you're going. If the others look ok, you can just replace the one and keep the rest as spares. i had that happen to me and i used really long needle nose pliers. Can I make the long trip like this and fix it when I get to my destination? I go to pop off the #4 plug wire and it breaks in my hand. It may never happen to you, but if it does, don't panic. The spark plugs themselves can serve anywhere from 30K to 100K miles before needing replacement, but the wires … What damage can this cause if not fixed soon? not to forget the very bad gas mileage you would get from this. New wires will help, but not unless your old ones are really bad. Fixed resistor wires should be replaced every two years of regular use to prrevent roadside breakdowns. It may take a little effort but it should easily cut through the fused bond. Checking the Wires with a Meter or Diagram Locate the spark plug's resistance rating. Care must be taken to avoid bending or breaking off the fine-wire electrodes. If you have another vehicle, you might be able to rob one wire temporarily for your trip. I check their resistance every other plug change and they're still fine and physically in good shape. 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