Help Car wont start

[Jgreenway]

SO 2 days after i bought the car. The wife and I were out when it had a sudden lose of power. since we were close to home she drove it and home and the next day i went out to start it to see if it was gonna do the same thing. Well it pushed out a ton of white smoke and covered the yard. I rebuilt the cyilnder head and put the car back together. It did take me a while to get the timing correct because i didnt want to bend a valve. So with the timing perfect the car just ran for a min and would die. Well i was then told that the reason for the white smoke was because of the turbo. Rebuilt turbo and its now solid as a rock or so it seems to me. However the car will not start, but when it does it is only for a sec or 2 and then it dies.

[StriktlyAudi333]

Sounds like a vacuum issue. Check all PCV lines as well as the direction of your check valves

[Jgreenway]

only vacuum line that isnt hooked up is the one that leads from the front of the intake manifold over the motor to somewhere.

[Jgreenway]

All vacuum lines found and fixed but the car still will not keep running

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[Afrckenway]

If the intake side is solid, and its getting spark maybe try the fuel pressure or injectors?? I'm not sure if the immobilizer would affect it either but seems like a good place to start

[Jgreenway]

I checked the injectors, however could it be the crankshaft sensor?

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[Jgreenway]

The engine speed dtc keeps popping on, sometimes it's not there, but....

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[Afrckenway]

I would guess it might cause it, if the Ecu doesn't know how fast the engine is spinning it might throw off timing and fuel and
shut off. I'm not sure if Audi's are touchy like that or not but it cant hurt to cover your bases.