Detail: 98 Park Ave 3800 Rough, Blue Smoke, Radiator Dry, Code P0306 ???
Solution: Yes, it could all be a leaking head gasket. The coolant could be going into the oil pan and you could be loosing compression thru the gasket. A mechanic would run a compression test on all 6 cylinders and check for leaks. , Hi, a 6ya Mechanic can help you resolve that issue over the phone in a minute or two. Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck! , oxygen sensor in exhaust , Sounds like your oil pressure sending unit is faulty! When you turn the key on, is the gauge reading low, then you start it and it pegs out? if so, the sending unit has failed.