How to Deal with Motorcycle Backfiring on Throttle Release?
3 Answers
Engine ignition disorder causes backfiring. Reinstall the high-voltage wires of each cylinder according to the ignition sequence to eliminate the fault. Overly lean air-fuel mixture in the engine leads to exhaust pipe backfiring. Check if the carburetor is clogged and adjust the fuel level accordingly.
Backfiring during deceleration is something I've encountered often in my years of riding motorcycles, mostly due to an imbalanced air-fuel ratio. It could be caused by a dirty or clogged carburetor, or incorrect ignition timing. First, check the spark plug—if it's blackened with too much carbon buildup, replace it immediately. Then inspect the carburetor's mixture ratio; if it's set too rich, excess fuel can enter the exhaust pipe and cause explosions during deceleration. For fuel-injected bikes, the throttle position sensor might be faulty. Exhaust leaks can also amplify the sound, so patch them up quickly. Don't underestimate this issue—prolonged neglect can harm the engine and even damage the exhaust catalyst. If you're not confident handling it yourself, I recommend taking it to a professional repair shop immediately to adjust the air-fuel ratio and service the carburetor. Regular pre-ride cleaning can help prevent recurrence.
When my motorcycle backfires during deceleration, I always worry about the potential danger. Safety comes first, so it's crucial to address the issue promptly. There are various reasons for this: the spark plug might be worn out and failing to ignite, or excessive carbon buildup may require replacement. A dirty carburetor or fuel injector can also cause this issue, leading to excess fuel igniting in the exhaust pipe. Additionally, it's important to check if the ignition coil connections are loose—poor contact can cause unstable electrical currents, making the situation worse. If you hear this sound while riding, pull over immediately and avoid continuing your journey. I make it a habit to perform regular maintenance: clean the spark plug every few thousand kilometers and inspect the exhaust pipe seals to prevent leaks from worsening the problem. If you're unsure about the issue, don't hesitate to tow the bike to a repair shop. Saving a few bucks isn't worth compromising safety—safe riding is what matters most.
