Manual Crank Shaft Turning

[1947verns]

My 1998 Boxster is burning coolant and in the process of removing the sparkplugs, coolant drained from the number 6 cylinder. I would like to take a endoscope video of the cylinder fully open to determine if the block or cylinder head is cracked. I need to rotate the crankshaft to the fully open position on this cylinder, but the crankshaft is not turning when a socket wrench is applied to the crankshaft pulley. How can the crankshaft pulley be freed up? Please advise. Thanks.

[JFP in PA]

Originally Posted by 1947verns

My 1998 Boxster is burning coolant and in the process of removing the sparkplugs, coolant drained from the number 6 cylinder. I would like to take a endoscope video of the cylinder fully open to determine if the block or cylinder head is cracked. I need to rotate the crank shaft to the fully open position on this cylinder, but the crank shaft is not turning when a socket wrench is applied to the crank shaft. How can the crank shaft be freed up? Please advise. Thanks.

By spending a lot of $.