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Brought to you by 1AAuto.com your source for quality replacement parts and the best service on the internet. Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out. Next time you need parts for your vehicle, think of 1AAuto.com. Thanks. In this video, we're going to show you how to change spark plugs on this Chevy Colorado. This has the 3.5 Liter 5-cylinder, which is the same as the 4-cylinder, a pretty easy procedure. You'll need 8 and 10 mm sockets for the racket extension. You'll also need a 5/8ths spark plug socket.
Okay, working from the passenger side, you'll want to remove two bolts and hold the top of the air box. One here and one right here. Now to remove this you want to remove this intake tube which is a clamp here and a clamp here. Remove that tube and then loosen both this one and this one to pull this apart. I'll speed this up a little bit. You can either use a flat-plate screwdriver or an 8 mm socket with a ratchet and extension to undo those clamps. This also- There's a small backing line here. Just twist and pull that off. This plate's up. There's also a line right back here. Just pull off the intake. This vehicle will be sitting for awhile so I'm just using a vacuum cleaner to clean up the vacated mounts house that's sitting on the intake. That will take a twist. I'm getting this collar off here. You can see here are our five coils. Any one of them, just remove the 10 mm bolt. Each of them had a little grey clip that you just pull on. You need a screwdriver to just push the little tab right in the center. Push the tab down and pull the clip right off. Then push the tab with your thumb. Press that then remove the lead. Remove this 10 mm bolt. Then once you have the bolt removed, just you can move it around.
Shake it up and down a little bit and then the coil comes up and out. Then the spark plug is right down in there. You want a 5/8th's spark plug socket designed to go in and grab hold of the socket. Put it down in with your extension. Spark plug comes right out. The plugs in this vehicle are in pretty good shape though because they were replaced pretty recently. Before you put your new plugs in, you want to check their gap. On this Colorado, it should be a .042. So, you take your .042 gap tool and just make sure it goes in there. It should have a little bit of resistance. It looks like it's open just a little too much. So I'm going to take it, close it up just a little bit, go back to the 042 and I can just carefully You don't want to use too much force because you can damage it, but just back and forth a little bit of resistance. There you go. This socket designed to hold the plug so you can lower it down in there. Make sure you start it by hand and be careful that the plug doesn't cross-thread into the head. It should go in quite a good distance just by hand. Then you want to tighten this up to about 25 to 30 foot pounds. Obviously, repeat the other cylinders.
New coil from 1A Auto exactly the same as the old one. Put it right down in. Go ahead and just push it straight in. Tighten up the 10 mm bolt. Plug your lead back in and then put the locking tab back in place. Repeat that for any cylinders you need. The cylinder order on these is usually just from front to back, one, two, three, four and five. If you get a code like number three cylinder misfiring, that's usually a bad coil, so you'd replace the number three coil. Put it back together. Put this on there. There's a little notch. It should stick up right there. I've got my two bolts already in there. Right here's that hose, push that hose down there first. Put this down in place. I'm just maneuvering it into this hose here. Push it into place. Twist this hose a little bit. It's a little bit off. Push it down over here. You should get it good and tight on there. Hook up this vacuum hose, 8 mm socket. Tighten up. Just inspect all our, where the hoses go, the housings, make sure they're nice and tight and then tighten up our clamps. Again, you're going to use either a flat-plate screwdriver or an 8 mm socket. Go back to our 10 mm socket and make sure these bolts bolt down in. Tighten them up. You're all set.
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