This would be a leaking fuel pressure regulator or injector.
You'll have to hook up a pressure gauge while your key is on/engine off.
If the pressure doesn't hold steady for at least 15-minutes, then something is leaking.
Pinch off the fuel return line from the FPR back to the tank. If this stops the leak-down, then it's the FPR that's leaking.
If pressure continues to bleed off, then it's one/more of the injectors.
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Sunday, March 7th, 2010 AT 10:07 PM