Is the middle bit separated from the outer (rubber moulded connection)?
Otherwise the Bolt should be tight enough to not rely on the key. If the bolt is missing or loosened, it means it wasn't assembled correctly.
It needs a big torque and something to properly hold the crank solid. Possibly they just tightened it until the engine turned, maybe held it by hand. That is only about 1/4 of the torque needed.
Edit to say - sorry I'm talking about red block, not sure about 6 cyl.
Last edited by TonyS9; Feb 19th, 2019 at 13:11.
Reason: wrong engine
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