Tested various things...
Here is a video and photos. https://photos.app.goo.gl/gn1vTHGx7Rx93haW6
Mine's doing the same thing, but doesn't drift as far and "bounces" back. I still have to pull my dist. out and check. I have a new dist. vacuum pot to put in. Pishta gave me some stuff to check out. Thank you for sharing your pics, too.
The video shows the timing mark moving. I tested my timing light, it is working fine on my 4.7 and my wifes car. My damper can't be moving as it wouldn't be lined up to tdc every time right? The video shows it moving but it looks wierd because the shutter speed of the angle. The strange thing... the moving slowed down a little after everything I've done... weird!
Distributor: Gear looks fine, is engaged fine. See photos
View attachment 1715550247
RustyRatRod mentioned the hot air valve (heat riser?). I looked at this and it does indeed appear seized. I have bashed it and WD-40'd the crap out of it, maybe I can get it unseized. Unfortunately if it is seized closed that would mean it would be harder starting, if it's seized open then its operating as it should at temp. Either way the car should run when warm. Someone is welcome to correct me if I'm wrong on that, I'll keep trying to get it unseized regardless, I also have a lot of oil or gas where the intake meets the exhaust manifold.
I'll move on to testing vacuum pressures next and look for something hidden disconnected, ill try the cardboard trick too.
