Need help bringing 1995 4Runner back to life.

So it starts….. but goods and bad. It was running super super low idle like 400-500rpms. I adjusted the timing to like 10ish degrees to the left of top dead center which helped with the idle rpms. I then took it for a drive and it would stall out when I came to a stop and put it into neutral unless I pushed the clutch in before I came to the stop. The rpms would drop super super super low and then stall but it would start right up with no issue when I went to start the car again. The radio didn’t go out so I don’t think it’s an electrical issue but open to anything. Thank you for any and all advice

https://youtu.be/1k1YI9SZsbc?si=WoN5ynpJcAz1ThK_

https://youtube.com/shorts/JC6RpfMyJXc?si=m7evDyp7bj1Lhsjf

https://youtu.be/qDthSWv0ZW8?si=i42wpOOIKj3xAzf6

 

Update.

So the low idle I think I fixed with some cleaning and adjusting. Not 100% but now dealing with a new issue. I had a bit of overheating while doing the big test drive. It was only over heating slightly and only when driving slow or stopped. While driving 40MPH+ or the heat on it didn’t seem to overheat at all. When I got back from the 3-4mile drive I parked and coolant began coming out of the overflow radiator tank. I refilled the radiator and let it idle. It didn’t overheat according to the gauge but it began to boil vigorously through the funnel.

Thinking it might be a clogged radiator I drained out the coolant and flushed of the radiator with blue devil radiator flush followed by flushing the system again with water for 10-15 mins. When I filled it up again with coolant it began to boil out the no spill funnel. *see video below.

I did an exhaust gas tester on the coolant and didn’t get any exhaust gases in the antifreeze so I don’t think I have a head gasket leak especially since I just replaced the head gasket. When I pulled the engine I did a good clean of the outside of the radiator also.

My guess is the radiator is toast but would like to hear anyone else’s thoughts before I drop another hundred on the 4runner.


https://youtube.com/shorts/QaZnOi8G2oo?si=8-aOosmW9gSoPkb2

 

The low idle and overheating could also be due to a plugged exhaust, like a rodent nest.