I was replaced my bearings on my d16y7 and while doing that I had to spin the crank to get to the other pistons after I did cylinder 1 and 4 I go and try to rotate the crank to get to cylinders 2 and 3 but the crank stopped and is now stuck therefore the engine is locked up. What could be stopping the crank.

 

I’m assuming your engine is still in the car: Is your transmission still bolted up? If so, make sure it’s in neutral and/or use something to push the clutch in while you’re turning it... Also, check your accessories, (power steering, alternator, AC compressor) and make sure one of those hasn’t seized preventing you from turning the crank.

 

Wrong bearings?

 

either wrong bearings or something is wedged in there like debris or bolt/nut