* Fuel starvation. This can be caused by a clogged fuel filter, a faulty fuel pump, or a pinched fuel line.
* Air starvation. This can be caused by a clogged air filter, a dirty carburetor, or a malfunctioning throttle body.
* Spark plug problems. This can be caused by worn spark plugs, a faulty spark plug wire, or a bad distributor cap.
* Ignition timing problems. This can be caused by a loose or broken timing belt, a worn timing chain, or a faulty ignition module.
* Compression problems. This can be caused by a blown head gasket, a cracked piston, or worn piston rings.
If you are experiencing any of these symptoms, it is important to have your motor checked out by a qualified mechanic. They can diagnose the problem and recommend the necessary repairs.