I have a single code being pulled (p1283) ive checked pretty much everything including the maf, sparks, coils, everything seemed to look pretty much brand new. i had a small leak coming from my exhaust header which ive already replaced the gasket to along with most of the sensors ive still got one to replace but the car still runs extremely rich. when i checked the purge valve (after car was ran for abt 5 mins) i check to see if the valved had opened and was pulling in air i didnt feel anything if anyone else has any ideas of what it could be please let me know