I installed new plugs and wires in my truck today and just out of curiosity, I checked the gap on the plugs that were installed on my truck before. They were at .05"!!! The sticker under my hood said the plugs should be at .04" and thats what I put the new ones at. Why were the ones in my truck already at a bigger gap?

 

lazy machanic

 

Dmull
Plug gap widens with use. How many miles on your truck, or the plugs,??. If your engine calls for .040 plug gap, you are ok.

barracudadave67 aka Dave C.

 

Yeah that's what I figured. The truck has 87k on it and I don't know when the plugs were changed last. Is it normal for the wires to have those plastic sleeves on them? Is that something you put on or is that from the factory? And the wires that I installed are too big to clip into the spacer things, is that a problem?

 

some aftermarket wires have the heat shields on them, and not a big deal if they dont fit in the looms, just make sure the wires are secure and wont end up against exhaust manifold.

And +1 plug gaps get larger with use but yours were within tolerance

 

+1 on what SMKNRAM said.
Keep the wires away from Exhaust manifold, and route them as best as you can around the back of the heads, too keep them from arcing between them selves, so you don't get misfires. What size wires did you get,???. Most of the time larger diameter wires will not arc. You can also get larger looms from Summit or Jegs.

barracudadave67 aka Dave C.

 

I got Taylor Wires that are 8.2mm I think. I had them in my Chevy and they worked well.

 

They burn away as they fire, the gap will always grow over time. I've always had good luck with the AutoZone Duralast lifetime warranty wires. Be sure to use a little Dielectric grease on the boots.

 

I put a little dielectric grease in both boots before i installed them. What plugs comes stock on Dodge Rams?

 

the best plug is reg champions, they work well in these motors