My 90 b2200 doesn't run very well. When the number one cyl is at tdc the Mark on the pulley is at about 14 btc. It should be art tdc, but when I do that the piston is moving down. Help me please.
Is your key thing (can't remember the name) on your crank gone? I have heard of some people having this issue. Does the truck run? Or are you doing a rebuild?