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Audi A4 Questions

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My car failed Smog inspection for small leak in EVAP system and system too lean bank 1, OBD2 code P0171!Please send response to e-mail address loyalt@wwdb.org, thanks!
What is the type and size of the bolt that holds the crank position/speed sensor in place?
My gears won't go into reverse or anything else it turns on and I can't seem to find the issue.

My 1997 A4 quattro 1.8T was parked over the summer and I did not realize the battery had died. It starts fine, idles great but won't rev above 2k or so then drops out and comes back drops out and comes back. I am assuming the ecu or fuel inj. comp. eeprom has lost it's program.
I just took it home from the auto body and repair. The next day when I drove it, upon acceleration from a stop light the engine light came on and was driving sluggish upon acceleration and the engine revs high, doesn't seem to be auto shifting correctly, also don't think the mph odometer is gauging correctly. I feel I should take it back and notify my insurance there is more damage to the engine then initially estimated that needs to be repaired, however, concerned they'll claim it's an unrelated issue.
I have an Audi A4 2.0Premium and occasionally when i turn it on it will stutter like it has a hard time turning on or will cut off when i start it on the first time. The 2nd time i start it, it will turn over fine but if its a problem i can fix early before it becomes a bigger problem then that would be great.
sure where are the gasoline cable quite? because my Audi A4 are dripping gasoline like that some one have cut off the cable.Before from that cable its came out water?
when driving wont show speed ???
Car will not go over 20. Car sat for a month and had to be jumped. Never surged until then.
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