Hi I am having a no start condition with my 93 Audi 90 with 12v V6. I have already confirmed I have the basics. I pulled a plug wire from each bank and had spark, and I pulled fuel rail and confirmed I had fuel spray from each injector. Brand new plugs, plug wires and injectors all around. The engine cranks very fast and seems like it has very little resistance, although this 12v engine doesn't have a lot of valve tension so I'm not sure what to think about that. I just tried a compression test but I couldn't get any reading. Not sure if that's because I literally have zero compression or if it's because it's a cheap tool. I can hear the bassy exhaust pulses as I crank the engine with the plugs in so that leads me to believe I have at least more than zero compression.. I had also replaced the timing components with the proper procedure.. crankshaft at TDC and camshafts parallel to each other. I have rechecked timing numerous times since replacement and it has remained the same. I think I may have flooded the engine while replacing the injectors and while attempting to start the engine, so that could have something to do with the fast cranking speed, but it also cranked at this speed from the first attempt at starting. I've let the engine sit with spark plugs removed to help fuel dry out and I've also added oil to cylinders to try to regain compression but it hasn't helped. The car has been sitting for a year or so and gas was never removed but when I pulled the injectors the fuel that came out was of normal color and normal smell so I wouldn't think gas is the problem, I also added a bottle of ISO-HEET water remover just incase I had put ethanol gas into it. I can see the tach needle bounce as I crank so I will have to assume the crankshaft position sensor is working.