87 GLE flooding?

Thanks for your help in advance. If you know what is the cause of my
troubles please let me know. My "87" GLE 8 valve w/ 228K floods with
gasoline. If I remove the fuel pump relay it will start and run until gas
in the fuel rail is gone. When I put the fuel pump relay back into place
the engine floods again and will not start. Do I need a pressure regulator,
ECU, injectors, or what?
Paul

 

I've seen this twice caused by a wiring harness that kept all the
injectors turned on all the time. Check your engine wiring harness for
deteriorating insulation.

Fuel pressure regulators can fail in such a way that the fuel pressure
is too high, and a clogged return line will accomplish the same thing.

 

If the injectors are working properly they should buzz audibly, if they're
stuck open they'll simply make a click when the key is turned on and stay
open. Also the fuel rail can be removed from the manifold easily with all
four injectors still on it, point them in a direction where the fuel mist
won't be ignited and crank the engine for a moment, the spray should
pulsate.