 Basically we had, we had the, it was throwing a code saying that we were having misfires in cylinder one. So we opened it up and we swapped out spark plugs on all the cylinders and then still wasn't solving the problem. So then we swapped out the coil and then we swapped out the injector and that didn't seem to stop it. Then we started seeing codes thrown for O2 sensors. So we had bank one,