2003 Harley Davidson FLHRCI Road King Classic "spark plug" Questions

...spark plug torque spec for it please? Question edited for clarity. Question moved to make model category. SPARK PLUGS IGNITION - davidson.com https://serviceinfo.harley-davidson.com > en_US PDF Spark ...

...spark plug wire's, which is best I heard,to only use copper core spark plug wires on motorcycles Why? That is not true. Motorcycles use internal combustion engines that operate on the same principles ...

...Spark Plug Wires may cause misfires - Front/rear 20 in. 5,000-11,666 ohms. Wires must be clean and tight. Excessive wire resistance or faulty connections can cause coil damage. If carbon tracking is ...

...plug socket Hi Johny, HD 6R12 spark plugs are gapped at 040" and take a 5/8 deep socket to R&R but there are/were some Screaming Eagle spark plugs that needed a 11/16 socket. Have nice day. take ...

...plug another set of spark plugs into the wires. You should be able to see the spark that way. Do the test again using the plugs that was in the engine to check the spark plugs. If you find out ...