- Clogged fuel filter. A clogged fuel filter will restrict fuel flow to the engine, causing it to bog down.
- Dirty air filter. A dirty air filter will restrict air flow to the engine, causing it to bog down.
- Faulty ignition system. A faulty ignition system, such as a spark plug or coil, can cause the engine to bog down.
- Faulty fuel injector. A faulty fuel injector can cause the engine to bog down by delivering too much or too little fuel to the engine.
- Vacuum leak. A vacuum leak will cause the engine to run lean and bog down.
- Low engine compression. Low engine compression will cause the engine to lose power and bog down. This can be caused by a number of things, such as worn piston rings, a cracked piston, or a damaged head gasket.
- Catalytic converter issues: A clogged or faulty catalytic converter can cause the engine to bog down by restricting the flow of exhaust gases.
- Faulty oxygen sensor. A faulty oxygen sensor can send incorrect information to the engine's computer, which can cause the engine to run rich or lean and bog down.
- Weak battery: A weak or damaged battery can cause the engine to bog down.
- Defective fuel pump: A defective fuel pump may not be able to provide enough fuel pressure to the engine, which can cause it to bog down.
