After it was already running is when the tensioner moved the timing to a point where it is out enough to not start, or initial start up just pulled the driver side cam taking up slack. if idle was high probably advanced, retard your distributor all the way and try to start it, if that works that is the verification needed, should be a mark or position on the cam, sometimes the key position. Looking into toyota provided schematics on Ondemand5 looks like the marks were only on pullys, cant see relation to key way in pics too poor quality
