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Another updated
Before removing the engine I had random smoking exhaust, but couldn't find the source. I first noticed while looking for a hose leaking coolant. I had replaced my water pump and had a coolant leak that seemed to only leak while the car was running and hot. I drove the car around the block to heat it up and while still running I jacked up the front. Found it was a clamp I hadn't tightened down enough so it only leaked when it got hot.
Point of that story is that while the car was running and jacked up it created a smoke screen. In general it had a smokey exhaust that I only noticed when looking at the tailpipes. But from that day on it would occasionally smoke screen while driving.
Turns out my turbo had thrust play in it. I measured by pressing the shaft as far away as possible with a dial indicator on the shaft. Then pushed it all the way the opposite way so I'd get a reading of the full play. It was like .001-.002 IIRC
That has been replaced with a S5 that has no play.
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