Whats this mean?

[Dsm Gst]

idk what my friends saying when he said my cars running rich? is this bad?

 

[IgotBoost91]

search man, and you need to know the afr and well let you know

 

[Dsm Gst]

well i dont have a afr gauge so...

 

[Achelea]

I'll explain what it means. IN doing so, I'll assume you only know the basics.

To create fire, you need 3 things. First is Fuel to burn. The second is Oxygen to combine with the fuel. and the third is a heat source in order to start and accelerate the chemical reaction.

In your car the air measured by the MAS, and regulated by the throttle body, specifically the throttle plate. The ECU takes the reading from the MAS and tells the injectors to release a specific amount of fuel for the measured Air. The mixture goes into the cylinder and compressed. The spark plug ignites the mixture, and the combustion is what pushes the cylinder down. It's a steady burn, not an explosion. When it's done it's job, the exhaust valve opens and pushes it out.

When the car runs RICH, it is putting more fuel than it needs into the cylinder, which can hurt performance because there is not enough oxygen to burn properly. So you have excess unburnt fuel. The other problem is it will cool the combustion chamber, occasionally low enough to hinder the combustion process. When you are Idle, or even WOT, the car will inject more fuel than what is needed for combustion to keep the temperature stable. The excess fuel absorbs the heat and simply evaporates, usually long enough for it to be carried out of the cylinder. That's what is burned by the Cataleptic converter. It impedes the hot exhaust gasses enough to burn the remaining unburnt fuel. Too much fuel and there is not enough oxygen present to sustain combustion long enough to produce usable power.

Additionally it will hurt your fuel effeciency, and put more unburned fuel through the cat, which can melt it and block the exhaust, not to mention Fail smog if you ever have to do it.

When the car runs lean, the burn is hotter. It effectively produces more power, but it creates far more heat. Too much heat and you develop cracks and start burning rings, pistons, valves, etc etc.

Only draw back is I don't know enough about your motor to suggest where to go, but I think this would help you understand the terms used when referring to these cars.

 

[2gGSXEclipse]

I'll explain what it means. IN doing so, I'll assume you only know the basics.

To create fire, you need 3 things. First is Fuel to burn. The second is Oxygen to combine with the fuel. and the third is a heat source in order to start and accelerate the chemical reaction.

In your car the air measured by the MAS, and regulated by the throttle body, specifically the throttle plate. The ECU takes the reading from the MAS and tells the injectors to release a specific amount of fuel for the measured Air. The mixture goes into the cylinder and compressed. The spark plug ignites the mixture, and the combustion is what pushes the cylinder down. It's a steady burn, not an explosion. When it's done it's job, the exhaust valve opens and pushes it out.

When the car runs RICH, it is putting more fuel than it needs into the cylinder, which can hurt performance because there is not enough oxygen to burn properly. So you have excess unburnt fuel. The other problem is it will cool the combustion chamber, occasionally low enough to hinder the combustion process. When you are Idle, or even WOT, the car will inject more fuel than what is needed for combustion to keep the temperature stable. The excess fuel absorbs the heat and simply evaporates, usually long enough for it to be carried out of the cylinder. That's what is burned by the Cataleptic converter. It impedes the hot exhaust gasses enough to burn the remaining unburnt fuel. Too much fuel and there is not enough oxygen present to sustain combustion long enough to produce usable power.

Additionally it will hurt your fuel effeciency, and put more unburned fuel through the cat, which can melt it and block the exhaust, not to mention Fail smog if you ever have to do it.

When the car runs lean, the burn is hotter. It effectively produces more power, but it creates far more heat. Too much heat and you develop cracks and start burning rings, pistons, valves, etc etc.

Only draw back is I don't know enough about your motor to suggest where to go, but I think this would help you understand the terms used when referring to these cars.

Did you really just write that much??? If your car is running rich it is getting to much fuel. There are many threads on here explaining it. Not trying to be a dic but im saying please search before you ask questions. It helps the people with new questions that havent been answered before to keep there posts on the recent posts.

 

[Achelea]

Yeah, I did. I'm feeling a bit helpful today. But Yes, Use the search button. Please.