Sometimes you want to lean the fuel/air mixture for best power—a high density altitude situation, such as taking off from a remote mountain airstrip, is a good example.

If the air/fuel mixture is too rich for the engine while you are running at cruise speeds, the engine may tend to load up and foul the spark plugs, while if the air/fuel mixture is too lean the ...

A lean mixture contains more air than that, more than can actually be used in combustion. The opposite of a lean ratio is a rich ratio, which has less than 14.7 parts air and thus too much fuel.

Ever been told your car is running lean? It means the engine is receiving too much air or not enough fuel during combustion. You see, your car's engine needs a very specific balance of air and ...

There's an old saying in engine tuning that when adjusting the mixture of your engine you can be too rich a bunch of times, but only too lean once. With that in mind, determining the air-fuel ...

It's a common bit of tuning advice that a too-lean air-fuel mix will make your engine overheat. But there's more to it than that. By Bob Sorokanich Published: Jan 2, 2019 ...

While black smoke means a rich fuel mixture, white smoke means a lean one. However, while a lean fuel mixture is similar to a ...

Running rich means that there is too much gas in the air-fuel mixture. This can happen for a variety of reasons, but in a normally functioning system, the ECU will tell it to cut back on the fuel ...

Idle:1-3 percent CO or a 14.1-13.4:1 air/fuel mixtureCruise rpm:1-3 percent CO or a 14.2-14.0:1 air/fuel mixturePower mixture and acceleration:6.6 percent CO or a 12.0:1 air/fuel mixture for a ...

A rich fuel mixture can be caused by a malfunctioning oxygen sensor, mass air flow sensor, engine air Intake sensor, coolant temperature sensor, throttle position sensor, faulty fuel or ignition ...

Using the Computer Command Control (CCC) system an oxygen sensor monitors for a rich or lean air/fuel mixture in the exhaust system. This value is sent to the engine controller and, ...