a backfire is caused by incorrect timing or not enough back pressure in the exhaust pipe
Unburned fuel in the exhaust system causes the backfire from the exhaust pipe.
I think you are hearing pressure pops. Not a backfire.
A motorcycle jerk or backfire can come from the choke not shutting off completely, the fuel jets might be clogged, a gasket or seal may be broken. Valves that are out of adjustment could also be the problem.
to much fuel is going to the engine for it to burn it all
It's lean.
It's lean.
probably a bad spark, itll cause your engine to misfire flooding petrol in without igniting it, when it sparks afterwards it ignites causing a bang and backfire.
Backfire is normally caused by engine out of time, or spark plug wires installed incorrectly.
To stop motorcycle backfire, first ensure the air-fuel mixture is correctly tuned; a lean mixture can cause backfiring. Check and adjust the carburetor or fuel injection settings if necessary. Additionally, inspect the exhaust system for leaks and ensure the ignition timing is properly set. Regular maintenance, including spark plug replacement and proper valve adjustments, can also help prevent backfire.
Your car is running too rich.
bad gas
Too much PSI.