I'm getting an irritating misfire when I'm working the bike hard in the canyons and mountain roads.
Bike temp is averaging 180F, and it starts happening at about 3000 feet elevation.
I live at sea level, but I've been riding my bike in these same areas for years, this problem is new. Same PC3r and same fuel map-Kyle's Sato lowmount map.
Starts cutting out slightly at about 7000-7500. Continues cutting out till about 8000+.
Stops cutting out from 8000 and up, and seems fine below 7000, altho I feel slight occasional surging at a steady speed.
What I've done:
Replaced spark plugs, and air filters.
Honestly, I can't really 'feel' a difference, but they were due.
First pic is the old plugs, with about 7500 miles on them. Second pic is the new plugs with 250 miles on them. Do they look ok?
The fpr is new, but I checked it anyway, even put a little vacuum on the nipple - it held rock steady at 9Hg.
This is where I need help.
My line of reasoning is to check the following:
Bypass PC and ride the bike to see if that changes it.
While I have the tank raised, I'll check all the fuel injector connectors and pulse gen connector. I'll check coils, ECU, and CDI connectors.
Somehow I feel like it's not connectors.
Other facts about my bike:
2000 SP1 that's been well maintained for the last 10 years and 35,000 miles. It's at 51,000 now. Regular fluid changes, valve inspections, etc. My PC3r is at least 12 years old, but is secured snuggly in tail. Not bouncing around.
Suggestions and input appreciated.