A rich condition.
ignition and combustion.
Combustion chamber.
You are running too rich. the mixture of fuel and air has too much fuel in it,
It ignites the compressed air/fuel mixture.
The ideal fuel/air mixture or ratio for most internal combustion gasoline engines is 14.7 to 1. Meaning 14.7 parts air to one part gasoline. Any ratio below this is considered a rich mixture or too much fuel. Any ratio above this is considered a lean mixture or too much air.
If the car is carbureted then there are two little screws on the carburetor called air/fuel mixture screws that control the air/fuel mixture. There should be info. on your cars factory settings. Hope this helps.
It determines the Mass of the Air Flowing into the engine. The engine computer must know how much air is flowing into the engine to determine how much fuel to inject into the cylinders to get the appropriate fuel-air mixture.
torque specs air fuel mixture screw on a yz125 2003
It get's richer, The fuel/air mixture becomes richer..
It get's richer, The fuel/air mixture becomes richer..
Combustion chamber
Combustion chamber