Quote Originally Posted by kjohnson View Post
Yeah I did notice that my milage has been going doWn hill. Winter isn't helping but it is probably time. How much does a gapping tool run and how does that work do you just bend the end of the plug?
The vast, vast, vast majority (if not all) of the applicable plugs come pre-gapped. There will be those that will say 'check it anyway' there are the vendors that say 'don't check it, you'll ruin it'.

I kind of cheated, I found a piece of plastic (took a bit) that was as thick as the gap and checked that way. All of my NGK's were exactly as expected.