Hmm. My Concours has started acting up on me a bit. When I cold start it, it runs a bit rough and then wants to turn off. Sometimes I make it down the driveway and then it shuts off on me.... or my fav, turning from the driveway on a sharp right and then apply power and bam, it is now, or was already off (I am very careful there now). Has been doing it several weeks now. After it comes off the cold idle onto the warm idle, it can't quite stay running until a few min later when it is actually warm.
In the past, I would check my logs and realize it had been a year since I ran Techron through it and run a tank through and it would be fine again for another year. That didn't work this time (just did that at 39,965mi, 1800 miles/3 months ago). Not sure what to think. Correct gas. Great mileage. No power delivery problems after the initial 5 min. I wouldn't expect such an issue on a modern, fuel-injected 4. Any thoughts? Run another tank of Techron?
Yes, I am way overdue for a valve check (never done yet), but I don't think that is it.