How do I tell if my timing belt is broken on a 1992 gs300?
If you can get a valve cover off, spin the harmonic balancer, or the big pulley on the end of the crankshaft, and JUST A LITTLE BIT you do not want to cause more damage, and if the valves do not move the belt is broken and your engine is shot, it's an interference engine. If it broke while running, (well it's not going to just snap when it's not running) the pistons come up and hit valves that are not supposed to be open, so top end at least is shot and possibly a piston. All this is worst case scenario, if the belt is indeed broken
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