ArielTurboII

Hey guys new to this forum but not to rx7.so I have a S4 T2 love it! Sadly this last Friday on my way to work she decided to die on me. As I pulled over first think I checked was oil. Dip stick was dry added a at and she was half way on the dip stick, tower it home and started fiddling with it. She turned over easy by hand, I remove all 4 spark plugs and compression sound strong and even patter ( I also got it tested professionally in February and had 110psi on all 6 sides). When I start her, she sounds like a lawn mower and revs slow. My wideband shows its lean. I checked my injectors and they work fine, also checked the leading coil pack, plug wires and plugs and checked out fine! Any besides the bad exhaust note, there is no odd noise from the motor. What else can I check? I want to make sure the motor is blown or not before I sell my turbo and other parts before upgrading lol. Pleas and thanks for the help guys

WJMRTY

Does sound like a blown motor. 1 Cyl has most likely broken apex seal

ArielTurboII

thats what I was thinking to. But after removing the turbo manifold idk.. I recorded the inside as I turned by hand and the housing doesn't look bad, all apex seals are there but the rotor has scorch marks on it. But I think PO used the same rotor when he rebuild it. Also I cranked it with the manifold off and all 6 compression pulses were strong and even.