Ok so im trying to get my GTP to a point where i can get an emissions test. First off i have the cat efficiency code which im going to buy the emulator here soon to fix that. Then i have a small evap leak code which i was told that the plastic pipe where the service port is can just be replaced with vaccume lines and that should be it cuz the aluminum pipe after that shouldnt leak that easily are both of those true? Then finally it seems i have a misfire but it seems to just be at idle...you can feel it a little while at a light. Also when its parked i listened to the exhaust and you can hear the misfire. But, the crazy part is there is no stuttering no problems going wot...we have tried switching the wires i have replaced the cylinder three plug (its the P0303 code) and i ran some injection cleaner through the car but still getting the misfire. Could it still be an injector? or what can it be? Thanks alot in advance guys could really use the help figuring all this out.
