I have a 05 Dyna Wide Glide, and when I went to fog the motor before storage I noticed that the front plug I had installed (and gapped properly) was very black, and a bit shiny, the rear was fine. I am leaning towards and oil leak, as I was also getting a slow oil leak out of the front valve cover right at the front of the motor.

I am typically very much a DIY type of guy, but I am a little more leery to turning much wrench on the bike. Any smoking guns on what the problem likely is and how hard or how much it is going to cost to fix.

 

It would be more helpful if you posted a pick of the plugs and how many miles, motor upgrades (cams, pistons, headwork) etc.

 

The motor is stock (unless previous owners had done something I was not made aware of), and it has some screaming eagle II slip-ons. I can't get a pic at the moment, as it is put away in storage and not easy to get to, but I can try to get one when I pull it out. The front plug turned completely black and shiny after about 5000 miles, 17000 miles total on the motor.

I did just talk to a local MMI instructor, and he had the following thoughts on it.

Does that sound about right?

 

I run my bike year round. Air temps over 100 in the summer, well below freezing in the winter, and everything in between. I've never experienced plugs like you described. I don't see how cooler than normal air temp could cause that.

 

That is not going to do that.. Go to the Evo Classic Models forum and read the "sticky" "Reading Spark Plugs" it will steer you in the right direction...