What Causes the Popping Sound in the Exhaust Pipe of the 10th Generation Accord?
3 Answers
The popping sound in the exhaust pipe of the 10th Generation Accord can be attributed to the following reasons: 1. Excessively high mixture concentration, where unburned mixture enters the exhaust pipe and ignites upon contact with fresh air, causing backfiring; 2. Poor valve sealing, leading to incomplete combustion; 3. Partial exhaust valve erosion or poor sealing; 4. Carbon deposits at the contact surfaces between some intake/exhaust valves and their seats; 5. Zero clearance in some valve lifters or uneven adjustment/blockage of the dual-carburetor's idle ports; 6. Damaged exhaust pipe, resulting in loss of muffling and purification functions. The Accord is a mid-size sedan under GAC Honda. Taking the 2018 Accord Comfort Edition as an example, its body dimensions are: length 4893mm, width 1862mm, height 1449mm, with a wheelbase of 2830mm.
The Honda Accord 10th generation exhaust pipe making a chugging sound is mostly caused by poor exhaust flow during engine operation. I often encounter this issue when repairing cars. First, check if the spark plugs or ignition coils are worn out. Excessive carbon buildup on the spark plugs can cause misfires, leading to irregular exhaust pulses. Second, inspect the fuel system. Clogged fuel injectors or poor fuel quality can result in incomplete combustion, causing a puffing sound during exhaust. Third, examine the exhaust pipe itself. Loose connections or cracks can cause air leaks, making the sound more pronounced. These issues can lead to sluggish acceleration and increased fuel consumption. Using an OBD scanner to check for error codes can help quickly identify the problem. If you try replacing the spark plugs yourself and the issue persists, take the car to a shop to repair the exhaust pipe gasket or check if the catalytic converter is clogged. In short, don't ignore the problem to avoid more expensive damage to the catalytic converter.
My 10th-gen Accord also had exhaust pipe popping sounds last year, sounding like a motorcycle! The diagnosis pointed to the ignition system—worn spark plugs causing misfires at low RPM, making the exhaust sputter intermittently. Fuel system issues like low fuel pump pressure or carbon buildup affecting fuel injection could also be culprits. I replaced the spark plugs myself, and the problem vanished. But beware: a damaged exhaust pipe gasket leaking air can produce similar noises. DIY tip for owners: At idle, locate the sound—near the engine hood suggests ignition components; toward the rear indicates exhaust leaks. Parts are affordable, but professional diagnosis ensures peace of mind.
