Engine Misfires Or Has Lack Of Power

Check ignition and valve timing.
Check spark plugs.
Check for leaking or loose spark wires.
Check for adequate spark with a spark tester.
Check for worn distributor terminals.
Check cooling system.
Check for dirty or clogged fuel filter.
Check for contaminated fuel.
Check for clogged air filter.
Check for low compression.
Check for vacuum leaks.
Check for malfunctioning electronic fuel injection system.
Check for malfunctioning EGR valve.
Check for dragging brakes.
Check for slipping clutch.
Check for low auto transmission fluid level.