- Spark Plug: A worn-out or damaged spark plug can cause a misfire. Check if the spark plug is clean and properly gapped. Replace if necessary.
- Ignition Coil: A faulty ignition coil can also lead to misfiring. Check the ignition coil for cracks or damage and replace it if needed.
- Distributor Cap: A cracked or worn-out distributor cap can cause the engine to miss. Inspect the distributor cap and rotor for signs of damage and replace if necessary.
- Fuel Filter: A clogged fuel filter can restrict fuel flow and cause the engine to run lean, resulting in misfiring. Check and replace the fuel filter if it's dirty.
- Carburetor: A dirty or clogged carburetor can affect fuel delivery, causing the engine to miss. Clean the carburetor or rebuild it if necessary.
- Fuel Line: Check for any leaks or blockages in the fuel line that could be restricting fuel flow.
- Valves: Worn-out or damaged valves can cause misfiring. Check the valve clearance and adjust if necessary.
- Head Gasket: A blown head gasket can lead to a loss of compression, causing the engine to miss. Check for signs of a blown head gasket, such as white smoke from the exhaust or coolant in the oil.
- Compression: Low compression in one or more cylinders can cause a miss. A compression test can determine if this is the issue.
- Vacuum Leaks: Leaks in the vacuum system can also lead to misfiring. Check for any leaks and seal them if necessary.
