Car is running Rich.

[CH152]

I just pulled the plugs on the car after installing my A/F gauge to see exactly how accurate the 45 dollar waste was. The gauge said i was running rich, anyhow, after pulling the plugs they were like black almost. What could be the cause of this? I am getting to much fuel I reckon, but if I am going to raise the boost here later, should i really even worry about it? let me know something.

 

[jw]

Stock fuel pump?

 

[larryd]

DSMs run really rich from the factory adn since im assuming yuo have no fuel control IE) SAFC that would would explain it.

 

[CH152]

THanks guys, i will check in on buying one of those AFC's.

 

[Bohrn]

hmm, my plugs are always nice golden brown! What have I done?

 

[CyberDSM]

You know my ride is running rich too, according to the pocketlogger, my o2 reading is like .98 at WOT in 3rd. Its supposed to be something like .92 isn't it? I've only got the basic bolt ons. But I rewired the fuel pump. Could that be causing the problem? Also I heard someone say something about the ground thats connected to the downpipe having to do with gas mileage. Any truth in that, because I have an aftermarket DP and I don't think they put that ground back on.