So after having a major oil leak last week after my headgasket repair and having the shop retorque intake manifold to spec it stopped the leak.

At least temporarily. I went out this morning to head to work and noticed it was leaking again, the same amount.

So after checking the oil to make sure there was enough to make it to the repair shop to have them look at it again, i noticed it would barely idle. It was running extremely rough and my Service Engine Soon light began to flash. I have a Bluetooth OBD Scanner and running TORQUE on my android phone i got the following error codes. Since it's the same problem with the oil leaks now with all the new error codes. Should I assume it's something to do with a shoddy head gasket repair job? Or could this be something completely different.

 

I apologize for the tiny image, this should be better

 

Is the O2 sensor on bank 2 hooked up correctly? Could be a bad connection there. That many cylinders misfiring would be a drastic HG problem, so I would doubt that. Do some basic HG tests though before taking it back to the shop, so you have some ammunition if needed. Bubbles in expansion tank, milkshake in oil/oil cap, steamy exhaust, etc.

 

loose intake?

 

Maybe, but it all seems to be on one bank, so more likely O2 sensor. If your intake manifold was that loose, I would doubt it would even run, but who knows. Never seen that.

 

You paid for work, take it back. Did they have the heads machined?

 

Yep, heads were planed at a reputable machine shop (saw the invoice). Already had to take it once because the intake manifold wasn't torqued correctly and was leaking oil all over the place. Now it's back a second time for more leaking oil and now the rough idle and misfire codes.

 

They're telling me the misfires are being caused by the O2 sensor, and they wont diagnose the oil leak until they drive it, which they dont want to do until the misfire is repaired.