#5 - California vehicle? Do I need to replace more than one injector to match flow rates? Do I get a flow sheet for the new injector(s), and how do I determine it they match the ones still in the car.
If your worried about flow rate, replace them all. You can get them at any parts store or the dealer. You could clean the other 5 and just replace the one. The flow rate should be fine though, just replace the faulty unit.