adz_sportif_turbo Posted September 20, 2009 Share Posted September 20, 2009 when i run the fuel pump without the engine running...i hear a hissing noise coming from the inlet manifold!! what you think this could be?? sounds like injector is opening!! does it prime before the engine starts?? Quote Link to post Share on other sites
EN V Posted September 20, 2009 Share Posted September 20, 2009 maybe if the fuel pump is working constantly it could be the fuel presure reg returning the fuel back Quote Link to post Share on other sites
adz_sportif_turbo Posted September 20, 2009 Author Share Posted September 20, 2009 ahh yhh uv hit it on the nose mate!!! Quote Link to post Share on other sites
Steve GT Posted September 20, 2009 Share Posted September 20, 2009 yep thats what i was thinking too thats the answer dude lol Quote Link to post Share on other sites
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