Dazed and Confused
Join Date: May 2012
Location: Upstate New York
Re: 99 cougar engine problems help please
You can by a pressure gauge at most automotive stores that screws onto the service port on the fuel rail. It isn't intended to be left in place, but it can tell you the running pressures at the fuel rail. The SRI shouldn't have an affect other than allowing more air to be available for the engine to use, the throttle body will regulate how much passes and should keep the mix at the right ratio. The leaking gas puzzles me, check the fuel pressure regulator, see if it's corroded and/or leaking.
Ever notice that there's so many high performance parts available for GM products?
Did you ever think that maybe they NEED them?