Harley Davidson Spark Plug Replacement Harley Spark Plug Gap
How to Gap a Spark Plug Gapping Spark Plugs Thanks for Watching!!! High PSI tv Merchandise Available Below: Help me get to 100000 Subs. Does a Larger Gap of Sparkplug Gives More Power to Your Motorcycle Engine? How to Replace Harley Spark Plugs & Properly Set Gap I changed the spark plugs to iridium plugs about 2 weeks ago! Evidently I didn't gap it! Just put it in and was done! Simple mistake! Big headache. ...