Okay, sorry, my mistake, if the crank will not rotate and you are hitting something, you can do a simple test that may show something. Pull the plugs and place a long thin screw driver into the bore so it touches the piston, try rotating until it stops. If you have a rod blown out, one of the pistons will probably not move as far as the others. It is a bit of a hit and miss, but it is something you can try with out dropping the sump off.
Friday, June 30th, 2017 AT 5:13 AM