How to Stop Car Hesitation (Spark Plugs and Ignition Coil)

one, two, three, four! Rev up your engines! It's time for the Scotty Kilmer Channel Today I'm going to show you how to fix a car that's stuttering while you're driving, as you can see here while you're driving it's stuttering and pausing, now the first thing of course is to check for codes, but unfortunately in this case the check engine light isn't lit up, it's not coming on when the cars running and when I hooked up a scan tool as you can see there's no codes found so this isn't going to help us, now you could ask the cat but she seems more interested in cleaning herself, now this vehicle does have a hundred and twenty three thousand two hundred ninety eight miles on it, so basically it's time to be logical I asked the customer have you ever had this thing tuned up the spark plugs changed and she said not to her knowledge, so we'll start by checking them, always start with the most basic things like that, now I know people are going to think Scotty isn't the computer supposed to find all the problems, well in one word no, they'll only find problems when they reach a certain parameter like if they're off more than twenty-five percent if you get minor glitches a lot of times the computer won't trip any codes so it's no help in figure out what's wrong, so go under the hood and get to the spark plugs, we have to unplug the coil on plug take it out and get the spark plugs out, so we unplug the coil here take the power off then take this little bolt off, then we pull out the Coil on plug out it comes, now realize that most spark plugs are five eighths inch which is on almost every car uses for some reason Ford went with a crazy looking spark plug and it has a fourteen millimeter socket so you have to buy a special socket for this engine, then you get your socket wrench and take it off, now here's the old spark plug we're going to measure the gap the widths here it's supposed to be 40 thousands of an inch and as you can see as we measure it, it's more like sixty thousand so it's worn out now, so we're going to put in a new spark plugs, now on these modern spark plugs these are already coated so you don't need to put anything on them you just bolt them in and get them nice and snug you get a nice and snug then turn it just a little so it's tight now, realize these engine heads are made out of aluminum so do this on a cold engine don't do it on a hot engine wait until the engines cold and make sure when you plug the coil on plug assembly back in that it snaps in nice and tight and of course change all the other seven out so you change all eight on this v8 engine and look what else I found when I got to the first plug on the passenger side you can see the coil unplugs all covered with coolant little radiator hoses leakin and it's shorting this out so we're gonna change this coil on plug too, then after all that hot and sweaty work changing the plugs we crank her up and let's see how she goes, no hesitation now so the next time your car starts hesitating and shuddering while you're going down the road, why not fix it yourself, and remember, if your car has any problems just visit the Scotty Kilmer channel before it's too late

Channel: Scotty Kilmer

Views: 2,357,089

Keywords: car hesitating, how to fix hesitating car, hesitating, ignition coil, changing spark plugs, testing spark plugs, replacing spark plugs, car, car repair, diy, repair, scotty kilmer, spark plug, spark plug replacement, ignition coil replacement, how to replace ignition coil, how to replace spark plug, spark plug removal, how to test spark plug, how to test ignition coil, car diy, spark plugs, how to fix car hesitation, how to stop car hesitation, car hesitation, hesitation

Id: yqZo6K468to

Length: 3min 24sec (204 seconds)

Published: Tue Oct 18 2016