What causes backfire on deceleration?

What causes backfire on deceleration?

“In general, backfiring on deceleration (as opposed to acceleration) is generally caused by a lean condition in the pilot circuit. Then when the engine does fire, these un-burnt gasses are ignited in the exhaust pipe, causing the backfire. Decel popping is caused by the detonation of unburned fuel in the exhaust pipe.

What happens if your engine runs lean?

Running lean, on the other hand, refers to when a car’s engine receives too much air and too little fuel. When this occurs, you may notice symptoms like sluggish acceleration as well as jerking. Some of the most common causes of a lean-running engine include clogged fuel injections, bad fuel pump and a vacuum leak.

What happens if fuel mixture too lean?

Too lean a mixture will result in popping or a misfire; too rich a mix produces sooty smoke and a flame that won’t cut. For proper torch operation, you need a proper mixture. When you think of lean as meaning not enough fuel for the amount of air, you start with the concept that the amount of air is correct.

How do you adjust the air fuel ratio on a motorcycle?

23:15Suggested clip 102 secondsHow to tune motorcycle carburetors – YouTubeYouTubeStart of suggested clipEnd of suggested clip