This is a rather disheartening message to send to everyone but here it goes...
About a week ago I just put in a new airfilter into the car and decided to go out fora drive afterwards making sure that the filament wouldn't disrupt anything since other were having the discussion at the current time.
Drove around just normal nothing about 4k until I downshifted into 4th to speed up onto the interstate and my car fell flat on its face, christmas lights all over. So of course my immediate thought was maybe I needed to clean my MAF sensor. I pulled over immediately and checked the codes and it registered a misfire in cylinder3 along with PFFFE. Nervous I kept the car under 2.5k put my hazards on and turned around and headed for home.
Got in my garage and started a process of elimination. MAF looked clean as a whistle, none of the hoses and or wires were disconnected or loose. Figuring it was a coil pack issue or perhaps a bad plug I didn't have the tools to flip things around and test so I went to a local subie enthusiasts home last night to check it all out and a new code popped up PFFFF....and here's the result
Pulled the battery and air box and started to swap coil packs. All of which looked super clean. So so far so good.....Second, started with the rear drivers side sparkplug (cylinder4) pulled it out and looked a bit sutty. Meaning the car was running rich. Next up drivers front plug (cylinder 2) same result.
Working over to the passenger side pulled the front first (cylinder1) also sutty but deffinately signs of oil residue. And now the tough part....rear passenger (cylinder3) the ground electrode looked as if it had been hit and two minor markings looking like aluminum, along with oil residue.......not pleasant to witness
Went ahead and did a compression test and I had to walk out of the garage and collect my thoughts after this...
cylinder 3 ......... 28-32
cylinder 1.......... 115-118
cylinder 4........... 110
cylinder 2........... 110
Looking inside the cylinder with a small angled mirrotr since we didn't have a scope you could see something inside 3. What exactly the material I'm not sure
So here's the scenarios I guess
1- Hoping the heads are fine I'll be in need of a new shortblock
2- The passenger head may need rebuilt if damaged and assuming the drivers side is ok with there being no metal in the oil. Then shortblock and seals along with new head
3-IF there is metal in the oil I'm looking at replacing all the hard parts