How to Fix Popping and Crackling Exhaust Backfire?
3 Answers
When the exhaust backfires with popping and crackling sounds, avoid stomping on the accelerator to resolve the issue. The reason for the backfire sound from the exhaust is that the fuel injected by the engine at high RPMs is not completely burned.
I've also experienced exhaust backfire popping sounds while driving, which felt cool at first but later realized it's risky. The cause is usually misaligned ignition timing or excessive fuel injection, where the extra fuel combusts in the exhaust pipe. It's recommended to first check the spark plugs and air filter, replacing them if they're old. I also flashed the ECU to fine-tune the fuel injection timing, and controlling the fuel ratio helped a lot. But be careful not to go too extreme with modifications, as it can damage the exhaust pipe and drastically increase fuel consumption. Safety is key—avoid DIY modifications, especially since the engine gets hot and is prone to fires. Always monitor the dashboard and address any warning signs early. Sharing this with fellow car enthusiasts can help everyone save money and avoid pitfalls.
Having driven for many years, the popping sound from the exhaust is really not uncommon, and the root cause is mostly incomplete fuel combustion. Whenever I encounter this situation, I always think it might be due to clogged fuel injectors or aging ignition coils, causing excess gasoline to enter the exhaust pipe and ignite. The most worry-free solution is to visit a professional repair shop and let the technician adjust the ECU parameters with a computer to balance the air-fuel ratio. Don't tinker with it yourself to avoid causing noise pollution and neighbor complaints. Long-term neglect can increase fuel consumption and engine burden, so prioritize safety by regularly maintaining the spark plugs.
