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I am a new owner fo an all stock C4 with 40,000 miles, the car I purchased is extremely dificult to start after sitting for two or more days. I have tried letting the fuel pump prime before cranking. You can crank untill the battery goes dead. Put the boost charger on it and it wil finally start after about the fourth attempt. It does seem to run poorly when it does finnaly start but deos not appear to be flooded. Once the car starts it will start immediately every time there after. Previous owner had the fuel pump, fuel filter, and all eight injectors replaced. Anyone have any suggestions where to look from here? Any help would be appreciated. Thanks
First of all, welcome to the forum. Glad ya could join!
OK, back to the basics:
Fuel, spark, compression.
Any codes in the computer?
Any fuel pressure gauge near by you can use to see fuel pressure at the schreader valve on the fuel rail?
How is spark? Strong snappy and blue?
When cranking, holding pedal down to floorboard?