Looks like the gremlins are back. Still having startup issues and now stalling issues too.
Engine stutters and coughs a bit on startup. If I turn the bike on and let the fuel pump prime once, bike will crank but won't ignite. Flip the kill switch off/on to let the fuel pump run again and the engine will cough a bit and fire up with a little additional throttle. Idles OK after that.
Bike has stalled 3 times on me while riding on 3 separate days. First time was on Saturday going about 30 mph. Second time was yesterday going about 5 mph in heavy traffic. Today was the last time going at about 60 mph on the highway. Each time, I pull over and if I try to start it up again, I'll crank, but no ignition. If I let the bike cool off for a few minutes, it will fire up again with a bit coughing/stutter and some throttle.
The stalling seems to be an overheating issue, but it's difficult to replicate and happens without warning. I was watching the temp gauge and it was no more than 2/3 of the way up, not close to the red zone at all. The first time on Saturday, temps were in the high 80s. The 2nd and 3rd time, temps were around 70. Also, after it stalled today and I got it started again, I rode through spots of heavy traffic at about 5 mph for 15 minutes and no stalling issues even though the temp gauge was at around the same place.
I don't think it's 100% an overheating issue, but the bike has 27.5K miles so I'm going to do a coolant flush and clean the radiator anyway. I also have a new fuel filter, fuel return filter, and air filter on the way. FPR has already been replaced on Tuesday. Planning on taking off the tank and cleaning out whatever I can from the inside. I'm also going to try yanking the PCIII.
Will check to see if any MIL codes show up. While the tank is off, I might as well do a compression test since the gauge finally arrived this week. We'll see how that goes.
Any other thoughts?