Join Date: Aug 2012
Location: Whangarei, , New Zealand
The other thing to check (for random misfires, esp. at low revs/idle) is the connection of the plug cap to the HT wire. It's a screw together connection, and with age, the wires inside the cable break and disappear, and the end of the cable expands a bit, so the screw doesn't contact things too well electrically.
Easy fix - unscrew the plug cap, snip off about 12mm (1/2") from the end of the cable, and screw the plug cap back into nice fresh wires.
This solved a misfire problem that I had for far too long
- because I kept thinking it was the carbs. It wasn't until I got some second hand coils to change them out, and thought to check how well the plug cap was attached (not very well) that I thought to check the same thing with my plug caps.
'95 900 Superlight IV #064
Mods are: K&N filter, airbox lid on with rubber trumpets removed, MBP collets, full SMI (SilMoto Italia) spaghetti exhaust with 'open' carbon cans, 41mm FCR's - #182 mains!, Barnett alloy clutch basket, Oberon slave cylinder, Ohlins fork springs, Ohlins rear shock, Verlicchi swingarm.