Hey everyone, just recently picked up a 2008 G8 GT. The car has 152k miles. Completely stock, never had anything done to it. But I'm chasing a misfire on two adjacent cylinders. #3 & #4. I've verified the coilpacks are good, put new plugs in it, checked the fuel pressure, and each individual injector. But it's still misfiring. It's not a "Dead-miss" but very close.
I suspect this engine is suffering from collapsed DoD lifters. Hot at idle, it has very low oil pressure. 10-15psi, but no inherent lifter/rocker tapping.
Just wanted to get a second opinion on this matter. Thanks! -Levi.