[JLMounce]

Fuel in the tank is 2 weeks old. I'm going to check that the adjustable rotor has not moved when I check the timing system in general.

I do want to reiterate, this engine has functioned without issue in its current state for almost 10 years. I change the oil every year, put fuel in it and drive. These symptoms aren't from anything like a new build, recent tune-up, cam change etc. The longest the car has gone without being driven over the past year is about 4 weeks.