02-25-2015, 01:28 PM
(02-25-2015, 11:07 AM)Flynrider_imp Wrote:(02-25-2015, 09:00 AM)Haystack_imp Wrote: My Valkyrie went 103,000 miles before I sold it with original plugs...always ran great. I expect the same from the CB1100.
I read somewhere that U.S. regulations require ignition systems on autos to run 100,000 miles before expected replacement: any truth to this? With motorcycles?
i don't think there is any regulation mandating 100K mile plugs. Most auto manufacturers tend to use them because they can cram more stuff into the engine compartment without worrying too much about the plugs being easily accessible. Since they only have to come out every 100K miles it's not as much of a big deal if the procedure is a bit more difficult.
Motorcycles definitely don't have that requirement. The standard NGK plugs on our CB1100s are evidence of that.
i don't think there is any regulation mandating 100K mile plugs. Most auto manufacturers tend to use them because they can cram more stuff into the engine compartment without worrying too much about the plugs being easily accessible. Since they only have to come out every 100K miles it's not as much of a big deal if the procedure is a bit more difficult.
Motorcycles definitely don't have that requirement. The standard NGK plugs on our CB1100s are evidence of that.
This is an interesting topic. I did quick search and it appears that spark plugs do fall within federal emissions warranties. But, not to 100k miles.