Recent carb cleaning, synced carbs, lots of Seafoam, removed the 2 small red diaphrams in the gas cap and sprayed cleaner to clear vent line under gas cap (after reading about POOGS), replaced the spark plug cap on front by throttle cables, sprayed cleaner on plug wires to see if any problems (no problems - kept running fine with no stalling), replaced vent hose from left carb to petcock, right carb vent hose is plugged (bike has been coastered).
I have easy cold start in the mornings (with Choke ON), smooth idle, smooth and fast acceleration, easy warm start after a drive, but around 5000 rpm and higher it feels like its struggling for enough fuel...sputtering, almost stalling, etc...
(this will happen in any gear) It almost sounds like only half the motor is running, because I can pull in the clutch and rev it but it does not sound like it should (sounds weak - hard to explain in writing). Usually I can twist the throttle to open up all the way and keep going around 60 mph in top gear. At times this will continue for a mile or so with the bike sputtering and jerking the whole way, until I close the throttle and slow down. Then after I slow down to around 40 mph, I can speed back up to 55+ until the problem returns (which may take only a minute or two but sometimes longer).
Keep reading for more weirdness...
Here's one of the main things that has me puzzled as it relates to POOGS. This problem occurs regardless of how much fuel is in the tank
. It happens as I'm leaving the gas station and the next day when I'm at 3/4 tank or lower. (I've read that POOGS is common around 1/2 tank)
The other thing that has me confused is that this only seems to happen when its really HOT outside
. I live in Florida. This "almost-out-of-gas-sputtering" problem has NEVER
happened when I'm riding early morning or late evening (when its cooler outside, 70-80 degrees), but it happens every day when I'm going home from work around 5pm...(yes its still 90+ degrees then) I've only had this bike for 1 month so I haven't had the chance to see what happens when the weather is colder (guess I'll have to wait until November for that to happen
I need some help and insight on this one, PLEASE!!