Car running rich Options

[NaderG]

I think my car is running a bit rich , the exhaust has alot of soot or carbon or whatever and when i start it in the morning there is a really heavy smell of gasoline coming out of the exhaust that only goes away after about 20 minutes of driving ... how do it tune the engine to fix this ?

[NaderG]

well , it went down this last 2 tanks , its like 21 now !! .... i checked my tires and they were VERY under inflated so i filled up and i hoping for improvement , the car is defiantly running rich , i can smell gas in the exhaust when i start it in the morning

[NaderG]

well , it went down this last 2 tanks , its like 21 now !! .... i checked my tires and they were VERY under inflated so i filled up and i hoping for improvement , the car is defiantly running rich , i can smell gas in the exhaust when i start it in the morning

Bump : There are two types of O2 sensors , OEM type and universal .... the universal type doesnt come with the electrical plug , the price difference is like a 100 $ so i'd be saving series $$$$ if i get the ones without the plugs ..... what is the best way to connect the wire to the plugs so that it can last ? of course taking in consideration the heat in the engine bay.