I have 3 newer 825i S4 vehicles. One will start and run when its cold but when it warms up, it wont start. When it gets warm while running, it starts running really rough and eventually gets to no throttle response at all.
I have a second one thats beginning to exhibit the same symptoms. The third is fine for now but Im sure when it gets more hours on it, it will do the same. All have less than 500 hours. Theyve had regular pm services. I removed intake sensors and cleaned with contact cleaner. I used some SeaFoam injector cleaner thinking the injectors were dirty. Its not getting the fuel. If you go wide open throttle rapidly, it tries to die.
I have a second one thats beginning to exhibit the same symptoms. The third is fine for now but Im sure when it gets more hours on it, it will do the same. All have less than 500 hours. Theyve had regular pm services. I removed intake sensors and cleaned with contact cleaner. I used some SeaFoam injector cleaner thinking the injectors were dirty. Its not getting the fuel. If you go wide open throttle rapidly, it tries to die.