P0300 code?
Thread Starter
Staging Lane
Joined: Dec 2020
Posts: 53
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P0300 code? So I got a 2000 Camaro z28 with only long tube header and everything else stock it ran fine no issues till recently it started running rough then at times runs fine so I took it to auto parts to use there code scanner it did pop up some 02 sensors code but I figured due to the headers but there was a p0300 code so I checked the spark plugs and seemed fine I also changed the fuel filter ran good for a bit but started running weird again any clues to what it could be?
If everything else is truly stock then you probably have a vacuum leak somewhere. Also probably why you have o2 sensor codes. out of curiosity, does it start running rough when your foot is on the brake?
Thread Starter
Staging Lane
Joined: Dec 2020
Posts: 53
Likes: 0
No when I accelerate and at times when I’m parked sometimes when I start it up it runs rough and other times it starts up and runs fine then starts to run rough also I did change out the fuel filter cause I thought it felt like it was bogging out and it did run good for a bit then started to act up again. I’ll check again to see if I got any leaks anywhere I missed thanks
