Spark Plug Wire Wear

By: Bob Van Slyke – HVBN member since 2014

05/04/2020

Folks, it was pointed out to me that there is a known problem with Rushmore series (2014 up to the when the M8 came out) Harleys involving the left side spark plug wire. I thought I’d post here in case you haven’t heard about it. I have a 2014 Ultra Classic with 38k miles and it has the problem.

 I have seen a few posts suggesting this may be on older models also. 

The problem is that the spark plug wire is wearing because it’s rubbing against the tank.

To check it, just run your finger up the wire about 4 inches and if you notice an indentation in the wire you should do something about it. 

Some folks are using zip ties or wire coverings to stop the wear. 

Good luck!