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5.0 runs rich...

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my 93 mustang 5.0 is failing emissions it is running on the rich side. motor is stock some bolt ons headers ..cold air ..stock mass air..motor is in great running condition runs great..but runs rich.. injectors are new ...19lb any help?

do you have cats. if not then thats your prob. also have you ran any codes and if so what codes if any do you get. could be bad o2 sensors.

Bad 02 sensors would be my guess too.  Run the codes...If it's not the sensors, clean your MAF. 

thanks ...cats are on the car....I will check the O2 this time I do not have a code reader..who sells these... most stores sell readers starting at 1996 year...

Research the Equus readers, but possibly the 3145 will suit your needs.


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