It started last week, I put SHITGO premium gas from the hood bc the price was cheap. I ran a whole new tank of 93 from Shell along w/HEET and seafoam and it still misfired.
Today I changed the plugs w/NGK Iridium and the o2's back to new stock Delphi ones bc I was having o2 DTC codes like crazy . It ran GREAT and then started misfiring 15 minutes later on my way to work. They bank 1 plugs (TR5's) looked good but bank 2 was caked in soot, same for the o2's. What could it be?
Fat Tony said he had similar problems when his fuel pump was on the out, but wouldn't it cause misfires on all cylinders not just 1 bank?
Thanks
Today I changed the plugs w/NGK Iridium and the o2's back to new stock Delphi ones bc I was having o2 DTC codes like crazy . It ran GREAT and then started misfiring 15 minutes later on my way to work. They bank 1 plugs (TR5's) looked good but bank 2 was caked in soot, same for the o2's. What could it be?
Fat Tony said he had similar problems when his fuel pump was on the out, but wouldn't it cause misfires on all cylinders not just 1 bank?
Thanks