My car utilizes an in-tank fuel pump that has the fuel pressure regulator/fuel filter(one piece unit) mounted on top of the pump, outside of the tank. It is easy to remove and replace, but at a best price of $91, I was wondering if there is a way I can just back flush the piece with something to clean it.... Does anyone practice this and have any suggestions? I was thinking maybe spraying carb cleaner thru the outlet nipple to push whatever is in there back out the inlet nipple. There is no replacement schedule in the owners manual. It is a replace when not working piece.