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1987 porsche 924s runs and hold a idle if one fuel injector is unplugged
do some trouble shooting today first when i start the car it runs and idles rough almost like its skipping left it running and started unplugging injectors one by one to check the fpr when i unplug the first injector the enginge stumble and runs on the other cylinder when unplug number 2 it does the same when unplug number it does the same but when i unplug number 4 the idle picks up and runs way better and doesnt cut off just recently changed the number 4 injector with a new one because it was bad and wouldnt spray gas at all could the fuel pressure regulator do this any help would be greatly appreciated thanks
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