How do you turn engine to tdc no 1 cylinder firing?

To turn the engine to Top Dead Center (TDC) for the number one cylinder firing, first remove the spark plug from that cylinder. Then, use a wrench on the crankshaft pulley bolt to rotate the engine clockwise. As you turn the engine, watch for the timing marks on the harmonic balancer or timing cover; align them with the TDC mark. You can also feel for compression in the cylinder by placing your finger over the spark plug hole, which indicates the piston is approaching TDC.