Does it make that big a difference if spark plug wires touch and cross over each other? Couple of my friends got into a debate over it. One says in the old days it mattered or with stock wire because they are not as thick. The other said it didn't matter with after market wires. So which is it????

 

I have the Taylor wires with the OVC setup, and the way they're routed there's a few touching each other. No problems noted.

 

If the insulation is breaking down on the wires is possable that they arc to each other and cause a missfire. If they were in that condition, the wires need to be replaced anyways.

 

It's ideal for the plug wires to have a 1/8" or larger air gap between them. The ones you want to watch out for are cylinders 5 and 7 since they fire one after the other. If they do touch it's ideal for them to be perpendicular to one another. They are the ones that need to be farther apart and are most prone to arcing. I think with good modern wires it's not as big a problem as it used to be.

 

The plug wires should not be touching each other, it may cause problems in the way of misfires. Some people have problems with it, others do not. I'm sure there are a lot of variables involved in weather or not a problem would develop.

General rule of thumb says do not let them touch ... that's what wire looms are for

Thomas.

 

in my stock wireing system, there is a large wire cover that covers and wraps all the drivers side together...

i have all of mine ziptied together on the passenger side.

altho i routed mine behind the i think its the starter... anyhow they are also at the oilpan corner

 

thanks guys....gonna go pick up some looms today.