Whenever I start my car the revs bounce for a while and as soon as I press on the accelerator the car stalls, meanwhile I can hear a sucking kind of noise at the engine and I can smell a faint fume of petrol near the fuel injector area, Its definately not an air leak as ive checked for this or the maf as that has been replaced.
Ive had 2 diags that came back with 0 errors, I have had the fuel rail out a few times after checking for air leaks under the manifold but I never replaced the O ring and the seals on the injectors could it be that these not being changed that the injectors are not sealing properly hence air getting in and causing this.
After a while the car gets going eventually and starts to run normally and this problem comes and goes and is very intermittent.
any advice as im at a loss is it important to change the seals once the injectors are out.
I'm having similar problems with my 94 530i. The bouncing rpm's, stalling, sucking sound, and the smell of gas. Until recently after I had the heads done at a local European auto repair shop, I never had these problems. That shop couldn't diagnose the problem and after having the car for two weeks the second shop specializing in European cars recommended that I take the car to the dealership to have the brain tested. The second shop did say that they narrowed the problem down to the left [u: d4bb8db448]bank of injectors were not receiving any ground pulses[/u: d4bb8db448]. I've ordered a new O2 sensor that should be in by Monday. I'll post a note if the new sensor takes care of the problem. I Hope this somehow helps you fix your problem.