Originally Posted by jr's3800
As for the Fuel pressure regulator and leaky injectors.... Hook up a fuel pressure gage and cycle the ignition on and then off... Look at the fuel pressure... If the pressure hold and doesn't drop over time, than you have a goof FPR and the Injectors aren't leaking
Not necessarily true. There is a check valve in the fuel pump that should
prevent the pressure from bleeding down but I have heard from people much more knowledgable than I that the GM fuel systems are known for not holding pressure. A leaky check valve would leak down into the tank. I have to agree, jr'* method is easier. All I am saying is if you find a pressure drop with that method, don't assume it is an injector or FPR. It could be a check valve, which is not big deal Might just take an extra crank or two to get it started. .