Most times it is a leaking return line seal, but with Pensacola injectors, it very well could be a cracked injector.
The best way to tell for sure (And locate which injector it is), is to remove the valve covers, hook up the fuel lines and run the engine with the valve covers removed.- Then look for the leak.
The best way to tell for sure (And locate which injector it is), is to remove the valve covers, hook up the fuel lines and run the engine with the valve covers removed.- Then look for the leak.