I am in the process of changing the timing chain on the motor in my 1988 4runner. I want to be sure that the timing marks are in the right place. I have looked at the factory service manual for an 1985 toyota 22re and I am not sure if the old chain that I have on my motor has jumped a tooth or two on the sprocket? The motor idled rough and was gutless until about 3000 rpms and had no power on hills. I have the timing chain cover off and have the cam shaft sprocket lined up with the mark on the rocker arm at 12 o'clock, but the key way on the crank shaft is pointed at about 1-2 o'clock. The FSM says the key shaft should be on top? So should it be 12 o'clock? I have alot of slop in the chain on the drivers side of the chain and the chain guide was broken on that side.