For some time now I've been getting a considerable amount of dark smoke from my tailpipe on cold starts which I believe to be an oil burning issue. I have an oil consumption test in progress, so far it seems to be about a quart every 1k miles.
Typically in the morning the engine starts fine, but then immediately sounds like it is struggling to stay running. This is when the smoke starts coming out of the tailpipe. Usually the engine and smoke clear up after 10 seconds or so. This morning, however, the engine completely stalled during this ignition phase. This has never happened before.
There is no engine light and everything runs fine otherwise. I have a clean MAF, clean throttle body, brand new spark plugs and cables, and several bottles of techron through the tank for the injectors within the past few months. Mileage is about 81k.