Well the preferred ratio is 14.7:1 (14.7(air):1(fuel)) so anything below this is rich.... 14.6:1 for e.g
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.
A leaner fuel mixture burns hotter than a rich mixture. so a leaner mixture will be more prone to detonation than a richer mixture.
No. The stochiometric ratio is a matter of fuel/air mixture... coolant has nothing to do with it. If you're running rich, you don't have enough air going into that mixture. Perhaps your air filter is past due for a change.
A rich condition.
14.7 to 1 is the sweet spot.
Mixture strength in combustion refers to the ratio of fuel to air present in the air-fuel mixture. It can impact the efficiency and performance of the combustion process, with a stoichiometric mixture (ideal ratio of fuel to air) typically providing optimal results. Adjusting the mixture strength can affect factors like power output, emissions, and fuel economy in combustion engines.
the air to fuel ratio mixture needs to be adjusted its running too rich.
If the injector pulse width is increased, the air-fuel ratio becomes richer, meaning there is more fuel relative to air in the mixture. This happens because a longer pulse width allows the fuel injectors to deliver more fuel into the combustion chamber. A richer mixture can improve power output but may also lead to increased emissions and reduced fuel efficiency if excessively rich.
The lambda ratio in petrol fuel engines is a measure of the air-fuel mixture's stoichiometry, indicating how much air is present compared to the ideal amount needed for complete combustion of the fuel. A lambda value of 1 (λ = 1) signifies a perfect stoichiometric ratio, where all fuel is burned efficiently. Values greater than 1 indicate a lean mixture (more air than needed), while values less than 1 indicate a rich mixture (more fuel than needed). Maintaining the correct lambda ratio is crucial for optimizing engine performance, reducing emissions, and improving fuel efficiency.
Stoichiometric, or chemically correct, air fuel ratio A stioichiometric mixture of air and fuel is one that contains just sufficient oxygen for the complete combustion of the fuel. A mixture which has an excess of air is termed a weak mixture, and one which has a deficiency of air is termed a rich mixture. The percentage of excess air is given by the following, Percentage excess air (Acutal A/F ratio - Stoichiometric A/F ratio)/(Stoichiometric A/F ratio) (where A = Air and F = Fuel) For gaseious fuels the ratios are expressed by Volume and for Solid and Liquid Fuels the Ratio are expressed by Mass. The equation above gives a positive result when the mixture is weak, and a negative result when the mixture is rich. For boiler plant the mixture is usually greater than 20% weak; for gas turbines it can be as much as 30% weak. Petrol engines have to meet various conditions of load and speed, and operate over a wide range mixture strengths.
Yes
install a cold air intake. more air with same amount of fuel being injected will lean out the fuel/air mixture. plus you'll get more power