This video shows the 68 Cadillac Eldorado coming into the mechanics shop for mechanical restoration. We started out by troubleshooting from bumper to bumper. That means inspecting and testing wires and HVAC, ignition, engine equipment. We also did a compression test to make sure the health of the cylinders are up to par. Cylinder #3 was a little low, but by adding penetrating oil to the cylinder walls and turning the engine over, we were able to loosen up the rings on the pistons. That’s good ne