its a 1999 audi a4 1.8t: the car just wont start i killed a battery already thinking if i keep cranking it, eventually it would start but no. so i got a new battery. i replaced spark plugs as i checked the old ones and they were pretty worn out, nothing... the car still doesnt turn on. gas is getting thru the injectors because i removed them to see if they sprayed gas and they do but i got trouble codes for all 4 injectors (4 cylinder engine by the way) the starter works i can hear it cranking when i try to turn the ignition on, any suggestions? also what does low circuit and high circuit mean on the code? i also got engine coolant circuit something code are these codes preventing the engine to turn on? i had to jump start the car since it left me stranded and luckily i got help from a toyota but it took about 20 minutes until it started i left the engine running for about 5minutes then i put it in drive gear and when i go to accelerate the car would stall and eventually die out. finally i tried to jump start it again 1hour later and it made it happen it didnt turn off, i got home but while driving it home when i had to brake and stop when i go to accelerate the car stalls then goes like if it wants to turn off. now the next morning i go to turn it on and the starter is working but it just doesnt turn on after about 30 seconds the oil pressure light comes on what might cause this? any suggestions will be helpfull