Help with my Baby please
I have a 92 325i (fondly dubbed Betty) and am having problems with her. My husband has done everything we can figure and still nothing. It lopes or surges at an idol, back fires, has no pickup and is getting poor fuel mileage. We have checked fuel pump, fuel regulator, changed plugs (to platinum 4 we will be changing that) changed o2 sensor, mass airflow sensor, a bad coil, injector rails and the computer. We have checked all the the replaced parts including injectors with positive results. We are not sure what the problem is and are desperately seeking help. Any ideas?