Check the spark plugs and make sure they are properly gapped and in good condition.
2. Spark plug wires
Check spark plug wires and make sure they are not cracked or damaged and that they are properly seated.
3. Distributor cap
Check the distributor cap for cracks or damage.
4. Ignition coil
Check for a weak ignition coil.
5. Carburetor
Check for a dirty or clogged carburetor.
6. Fuel Filter
Check that fuel filter is not dirty or clogged.
7. EGR Valve
Test the EGR Valve.
8. Oxygen Sensor
Check the oxygen sensor.