Need Some Input From Fellow Home Mechanics.............
Some of you may have seen me mention one of my current issues with my bike. The bike has lost 300 to 500 rpm at idle. I haven't been able to adjust the idle speed because I forgot to put the idle adjuster in reach last time I took the throttle bodies off. The bike should be at 1100 rpm at idle. It's around 750 rpm give or take. Probably more to the take side. It's so bad I have to hold the throttle open to keep near normal idle. Even then the bike seems to idle rough, as in more engine vibration. I'll be taking the bike apart Tuesday for a new rear tire, oil change, and some cosmetic stuff. I plan to check the spark plugs. On my previous bikes the spark plug gap seemed to be the problem. I doubt it's the timing chain, but I may pull the head cover off to see if the timing marks are lined up. Anybody have any suggestion to where else my loss of idle speed could be from? I'll list all the engine specs, and mods below.
-PC3USB Custom Mapped For A Ti Force Full System
-Air Injection System Disabled With Block Off Plates
-Thin Head Gasket (+ .5 to .75 of a point of compression added)
-Note Bike was dyno tested after thin head gasket. It was deemed not worth remapping. I agreed looking at new A/F ratio compared to the original custom map session ratio.
-Regeared -1/+1 F/R Sprockets I'm not a slow rider, but I don't hammer the snot out of my bike.