* Worn or damaged spark plugs
* Dirty fuel injectors
* Faulty ignition coils
* Vacuum leaks
* Faulty oxygen sensors
* Transmission issues
* Driveline issues
* Fuel pump issues
Diagnosis:
* Check the spark plugs for wear or damage.
* Check the fuel injectors for clogs or damage.
* Check the ignition coils for proper operation.
* Check for vacuum leaks.
* Check the oxygen sensors for proper operation.
* Have the transmission inspected for any issues.
* Have the driveline inspected for any issues.
* Have the fuel pump inspected for any issues.
Repairs:
* Replace worn or damaged spark plugs.
* Clean or replace dirty fuel injectors.
* Replace faulty ignition coils.
* Repair any vacuum leaks.
* Replace faulty oxygen sensors.
* Repair or replace the transmission as necessary.
* Repair or replace the driveline as necessary.
* Repair or replace the fuel pump as necessary.
Additional Notes:
* If the skipping or bucking only occurs when the engine is cold, it may be due to a faulty choke.
* If the skipping or bucking only occurs when the engine is hot, it may be due to a faulty fuel pump or vapor lock.
* If the skipping or bucking occurs at all speeds, it may be due to a faulty ignition system or fuel injection system.
