I have a 99 Audi A4 AWD A/T, 140k Mi

I read multiple threads and tried various of things.. Two weeks ago I washed the engine motor, ever since the car hasn't started. The things I've checked are:

Disconnected the 14mm 17mm pressure fuel line: No Fuel Being pumped!
Ignition Coils: Have Spark
Fuel Pump Relay: Changed
Fuel pump Fuse #28: Changed
Jumped Fuel Pump: Fuel pump good.
Changed ECU
Sprayed Starter Fluid in Air Filter: Starts for a Second.

What else could be problem??

 

You've been doing some expensive guessing. You need to pull some VAG-COM codes. That will tell you right away.

 

Haha. The fuel pump was bad. I tested it by hot wiring it straight to battery and it turned on.. So I didn't think it was the problem.