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What's the meaning of a "lean" vs "rich" air fuel mixture
I do not know the etymology of these words or the history of their use in the context of air-fuel ratios, although their dictionary definitions (lean [adj.], rich, too bad I don't have an OED ...
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What's the meaning of a "lean" vs "rich" air fuel mixture
A lean air/fuel mixture is when there is more air than required to burn the fuel.
A rich mixture is when there is too little air for the given quantity of fuel.
The ideal mixture, where there is ...
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Spark Plug Deposits
Depending on the mileage on these plugs, I'd suggest there's absolutely nothing wrong with the way your engine is running. These plugs look to be in great shape. The small amount of deposits on the ...
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Subaru Forester - petrol coming out unlit in bursts out exhaust. Ideas on what could cause it?
Super simple, but I reset the error codes with a little bluetooth OBDII scanner and the engine has come right!
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Subaru Forester - petrol coming out unlit in bursts out exhaust. Ideas on what could cause it?
Possibly a faulty spark plug, ignition lead to the plug, or a faulty ignition coil.
If you are not getting a spark at one of the plugs, you will get unburnt fuel coming out of the exhaust and it would ...
- 25.5k
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How can I diagnose if my engine is running lean or rich?
If your car is running rich you should have a strong smell of gasoline from your car.
Have you considered using an air/fuel ratio gauge? Personally, I prefer to see the exact number.
I have the air/...
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Is there a chemical limitation to the mixture an engine can maintain?
You can't go any leaner than injecting no fuel whatsoever. This may sound dumb but actually an engine will continue to spin for a few firing cycles without fuel. Some engines are able to actually ...
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What's the meaning of a "lean" vs "rich" air fuel mixture
Ideal air fuel mixture (ratio) is 14.7:1. That is 14.7 parts of air ignites with 1 part of fuel. This will archive the best fuel economy and lowest emissions. This figure is also known as Lambda 1.
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