yesterday i did a gte conversion in to my nova and somehow i managed to put the fuel pipes the wrong way round so it wouldnt start i soon came to the conclusion what i had done and fixed the problem now it is overfuelling injectors? rail? regulator? non of thease?
FORGOT TO SAY MY MATE WIRED THE PUMP DIRECT TO THE BATTERY NOT THE ECU
the fuel pressure regulator is just a restriction to flow. everything before it, in terms of flow direction, will be pressurised.
so when you plumbed it in backwards, all it would have done is pressurise the fuel hose between the pump and the regulator to about 2.5 bar, and a dribble of fuel into the rail.
you cant break it by doing this.
did you make sure the vacuum hose is fitted between the regulator and the inlet manifold ? without this connected the regulator will supply full pressure to the rail, overfuelling at idle and mid range.
just double checked and the vacume pipe is connected so................
my fuel pump is in the engine bay and i am using std carb lines as i spoke to a guy who said he had done this and every thing was fine all i have before the regulator is about 1meter of pipe then fuel pump-std gte
so the injection pump is sucking fuel the entire length of the car ? not the best solution imho. a low pressure lift pump, up to a resevoir in the bay, and then the high pressure pump from the resevoir to the fuel rail would be best.
also. in terms of flow, it should go
TANK > PUMP > FILTER > (FUEL FLOW DAMPER) > FUEL RAIL > FUEL PRESSURE REGULATOR > TANK
i put the flow damper in brackets as its not entirely necessary.