why would gas be coming from the throttle housing that connects to the air filter housing?

2005 CHEVROLET IMPALA
65,400 MILES
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IMPMAN23
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i took my 2005 chevy impala in to find out why the check engine light was on and i was givin a p0300 code multiple mis-fire..my car rides terrible on take off and i have to press down on the gas to start it...while driving i have to put it in nuetral when i come to a stop to keep it from shutting off..so i decided to check the injectors and once i lifted the plate up gas poured from the housing could that be a bad pressure regulator or bad fuel injectors..can you please shed some light on this matter for me..respectfully eddie murry
Nov 7, 2011 at 6:46 PM
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JACOBANDNICKOLAS
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Eddie, what plate did you lift? Also, have you checked fuel pump pressure as well as the regulator?
Nov 7, 2011 at 6:49 PM
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IMPMAN23
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i lifted the plate that covers the fuel rail..it's connected to the throttle that has a black rubber piece that connects to the air filter..and no i havent't checked the pump pressure..how can i check the pump pressure and the regulator?
Nov 7, 2011 at 7:22 PM
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JACOBANDNICKOLAS
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Check pressure. Go to our homepage under the DIY section for directions. There are detailed directions and a video.
Nov 7, 2011 at 8:12 PM