Blue smoke coming out of tailpipe...

My car has difficulty cranking over. We replaced the starter and the symptoms did not change. Now I will ask him to check either a frozen pulley or maybe the flex plate jammed up. Thank you, JB

My car cranks over with a wrench, so it is not locked... What is dry lock anyway?

Could it possibly the upper intake manifold? This happened a few years ago and the symptoms were exactly the same? My mechanic told me he found fouled plugs, so, we changed out the plugs and wires still the same...