I took it for a oil leak inspection as I just purchased the vehicle and it has a leak. When they pulled it outta the shop it started misfiring. I replaced the coil pack, spark plug and wire in cylinder 1 and 2 and the spark plug in 1. It seems like it's getting spark in one and two and it seems like it's getting fuel in one and two. I wouldn't understand it being a compression issue all of a sudden bad enough to where I can't drive the vehicle. Any possible ideas?

 

What year S70? Also, are you sure it is misfiring in cylinder 1 and 2? How was this checked and determined. If it was running fine when it went into the shop and came out running poorly, I would strongly suspect something they did when they worked on it. It is on them to fix it or at least re-check their work.

 

Issues with adjacent cylinders makes me wonder about a possible head gasket issue. Have you done any tests for compression or HCs in the coolant etc? Any signs of coolant mixing with oil or being consumed etc

What did they do when inspecting for an oil leak? Generally there's only a few places for oil leaks - cam seals and VVT gear come to mind up top, front and rear main seals, oil pan gasket etc. Did they test for PCV issues (a clogged PCV could force out the cam seals or push oil out of hard or worn seals).