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Summary: If a spark plug wire is put on incorrectly, the connection won't be complete and the car won't fire. Replace spark plug wires with auto repair tips in this free video on car maintenance.
John Clarkson is a jack of all trades and has worked as an electrician and mechanic.read more
"Hi. I'm John with ExpertVillage.com and today we're changing spark plugs. Now, we've already removed the spark plug, assessed it to see what's going on inside of our engine. Now, we've put it in and we've tightened it just enough. Now, we need to put the spark plug wire back on. Now, this has to be put on right otherwise it won't complete the connection and it won't fire. Therefore, a dead cylinder and misfiring. You want to make sure it's on right. So, lets', let's put it back on. Now, remember when you take one of them off and replace it, do one at a time. It's not that hard to forget on a four-cylinder but on a V-8 or something with, you know, a lot more, uh, spark plugs you're changing, you can forget. So, when you put it on, make sure it's straight up and down, and when it goes down, it should just, it should click right in. Alright, there you go. It's on."
eHow Article: Replacing Spark Plug Wires