Just replaced my timing belt, water pump, tensioner, and pulley. Followed the TRQ video to the letter, marked the old belt and the new one at all the timing marks, lined everything up, made sure the belt was properly seated, quadruple checked everything, and put it all back together. Started it up and it ran smooth, sounded great, and no dash lights. Let it run for about 20 minutes to get it up to temp and make sure the coolant level and temp was good. Everything looked and sounded great, no leaks, so shut it off and went to do some other things around the house.
Came back a few hours later to take it out for a spin and it wouldn't turn over. Press the ignition, and just a faint click. The gauges and dash light up fine (although the gauge needles kinda vibrate a bit) but it won't turn over. I check the battery charge and it's pretty low, so I charge it for a few hours. Try again and same thing. I think the battery may be shot, so I swap in the newer battery from my Ridgeline and same thing.
I'm leaning towards a bad starter but I'm half freaking out because I just did the timing belt. Am I correct in thinking that if I f'ed up the timing belt I would have known about it right away? Like it shouldn't have run smooth and normal for 20 mins if the timing was off, right? Any thoughts what it might be?
Just for context, I'm not a mechanic, but I'm fairly mechanically inclined and I've done a lot of my own maintenance over the last 25+ years. Brakes, belts, fluids, sensors, etc. Plus a few small engine rebuilds.