03-20-2014, 08:03 AM
(03-16-2014, 11:51 PM)The ferret_imp Wrote: Just my opinion
Honda calls for ridiculous early replacement on motorcycle plugs. Same type plugs (std NGK) in my ST were replaced at 25,000 miles (called for at 16,000) and looked new. Some on the ST forum have put over 50,000 miles on them. Same type plugs in my Honda Civic call for replacement at 110,000 miles.
These are fuel injected, and computer controlled. On a non modified bike they can't run lean, rich, or misfire. Every firing should be text book as the engineers designed it.
And while I'm harping, why of earth should a standard NGK plug cost $20 apiece?
I might replace mine at 25,000 miles if I feel it needs it. For some of us replacing every 8,000 miles could be twice a year.
Disclaimer: I am not an engineer .... YMMV
I agree with your assessment. I think there is a bit of a revenue stream involved with some of the recommended maintanence. One of my other bikes is a 2008 Suzuki V-Strom. It's recommended to have the valves checked and the throttles synced every 8,000 miles. I've periodically checked the valves and in over 98,000 miles I've never had to adjust one yet. I've also ignored the throttle sync with no issues. I figure if I don't mess with the linkage, then they shouldn't get out of adjustment.
What it really boils down to is you just need to use a little common sense and do what needs to be done when you think it needs it.