Question about 2004 Cadillac DeVille DTS

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Have a 2004 cadilac deville with northstar engine in it got a to re place fuel injector how do you do it

One injector is bad how do you replace it?

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There's a shraeder valve to easily de-pressurize the fuel system before working on removing the injector...



you need to remove that plastic "beauty plate" to see the intake plenum/ manifold

he shows you how to unplug the electrical connector from that fuel injector

from there, someone else maybe chime in on how to disconnect the hose from the injector if you have a similar setup as that youtube link

PS: make sure you lube the o-ring of the injector before installing How to change fuel injectors

Posted on Apr 03, 2015

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Posted on Jan 02, 2017

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this cars are very coming with the leak at the fuel pressure regulator, all you have to do is locate the regulator for the fuel, it is on the fuel injector rail, and unplug the vacum hose if you see any fuel or smell like fuel inside the hose that means the regulator has to be replaced,

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