Hello all. I have an 07 saturn vue with the 3.6l. It has been running a little ruff and the engine light came on. I pulled the codes and came up multiple misfires. I took it in to local machanic. He ended up replaceing the injectors. Got it back together. Says there is plenty of compression, idles good. But it is still coming up with misfire on number two. He can not figure out why. Any thoughts.