misfire

I am getting random misfires per OBD diagnostics on all the cylinders on the drivers side. Has anyone had this issue? Not sure if it is a vacuum leak, fuel issue or and 02 sensor. It is running Ok, just a little hesitant when giving it gas. Anything I should be looking for on when checking the...

I have been having a lean misfire with my 98 I30. It usually only happens when I am in idle or low rpm's. Recently my car has been idling a lot lower then it previously did around 4000 in nutural and 6000 in gear. I upped my idle by about 3000 rpms and the problem seems to have stopped but seems...