[TundraMaxxer]

Can someone explain what happens when a camshaft fails? Does it just stop? Does it explode, or create a loud noise? Will it continue running?

Also, how does one fix it? I'm assuming it's a complete tear-down of the engine, which I suppose is why Toyota thus far has opted to replace the engines instead of fixing the old ones.

Also, does a camshaft breaking cause other internal damage to the engine? I would think that's a real possibility.