Yesterday, I finally had a bit of time to tend to the Camaro. Last week when I backed it out of the garage, I noticed a substantial fuel leak located under the bell housing.
There's only a few places in the back of the engine where fuel could be leaking from; pressure regulator, fuel rail cross-over tube or cold start injector hard line. I rigged up a jumper wire and momentary switch, and ran the fuel pump (engine off) thru the ALDL to see if I could locate the leak. Nothing visible, although there was a faint fuel smell.
When I get the time, I'll have to run the engine and see if there's a leaking injector(s) but this is unlikely to cause the amount of visible leakage.
Letting vehicles sit for long periods is not good for them.