I will assume you asking about a petrol motor... usually its incorrect timing settings, find out what the timing setting should be, then adjust to suit a leaky exhaust system will also cause this
Unburned fuel in the exhaust system causes the backfire from the exhaust pipe.
I think you are hearing pressure pops. Not a backfire.
Separation of the ethanol due to water in the gasoline.
a backfire is caused by incorrect timing or not enough back pressure in the exhaust pipe
It's lean.
Hi, Has a clutch in it and it is not supposed to because it disengages in reverse. Peace, crigby
Air in the clutch line and needs to be bled.
One of the best Toyota used truck is the Toyota Hilux. In other countries, the Toyota Hilux is marketed as the Toyota Tacoma.
Yes
It's lean.
probably 180 deg out on timing
bad or going bad alternator belt