My father's bike is a 2000 road king EFI 88". We loaded the bike up on the trailer, there was no noise. We drove 1300 miles to FL and unload the bike. Start it up to move it into the garage and there's a loud tick. No oil pressure light, plenty of oil in the bike.

Any idea what's causing it? Sounds like a valve-train tick, but can't tell from which head. I will try to find a stethoscope while i'm down here.

Thanks for any help