I need help

Pull #1 plug. Rotate the engine until the #1 piston reaches the top of its rotation. Look at the harmonic balancer. You should see a notch lined up with the timing mark on the timing cover. If not, rotate the engine 180 degrees, bringing the piston up and check again. Remove the distributor cap. The rotor electrode should be pointing to #1 plug wire tower. If not, loosen the distributor hold down, replace the plug and cap, and slowly turn the distributor until the engine fires. If this doesn't work, check for spark and fuel delivery. If these are good, you most likely have a timing chain that has skipped gears.