- Improper installation: If the snorkel kit is not installed correctly, it can cause air leaks that can lead to backfiring. Make sure that all the connections are tight and that there are no gaps or cracks.
- Clogged snorkel: If the snorkel becomes clogged, it can restrict the airflow and cause the engine to backfire. Check the snorkel regularly to make sure that it is clear of debris.
- Incorrect jetting: If the carburetor is not jetted correctly for the increased airflow provided by the snorkel, it can cause the engine to run lean and backfire. You may need to adjust the jetting to get the engine running properly.
- Exhaust leak: If there is an exhaust leak, it can cause the engine to backfire. Check the exhaust system for any leaks and repair them if necessary.
- Incorrect timing: If the timing is not set correctly, it can cause the engine to backfire. Check the timing and adjust it if necessary.
If you have checked all of these things and the engine is still backfiring, you should take it to a qualified mechanic to have it diagnosed.
