When removing the fuel rail... - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-06-2007, 09:21 PM   #1
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When removing the fuel rail from the manifold, do you pull off the fuel rail assembly with the injectors still attached to it? Or do you first detach the fuel injectors, then the rail, then pull the injectors out individually? Thanks.
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Old 06-06-2007, 09:23 PM   #2
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Injectors stay on the rail, when you get it loose, slowly wiggle the rail and they will pop out of their holes.
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Old 06-06-2007, 11:21 PM   #3
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One more thing, all I replace are the upper and lower o-rings, 2 for each injector correct? Should I coat/lubricate the o-rings with anything like silicone?
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Old 06-06-2007, 11:28 PM   #4
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Yes, two o-rings for each injector. I didn't lube any when I did mine. I would say it'* not necessary though.
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Old 06-07-2007, 02:29 AM   #5
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NOT SILICONE!!!!!!!!!!!!!

That will kill your O2 sensor quick. Just a drop of motor oil or WD-40 will do you for lubing the o-rings.
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Old 06-07-2007, 08:11 AM   #6
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Remove the 4 nuts holding the rail.. wiggle each injector and lift up on rail. A trick to remove if it'* never been done is to spray a little silicone at each lower o ring (where the injector sits in the manifold). There won't be enough silicone to hurt anything..don't use the whole can.

Yes, two rings per injector, being careful on the bottom ring. Those wafers you see are hard and brittle. I use a little vasoline to lube then rings after installation to assist them in going back into the fuel rail..and then the manifold.
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Old 06-07-2007, 06:37 PM   #7
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I used some clean 2-cycle oil I had laying around for re-install.
They popped out pretty easy.
The oil really helped, they went in with no problems at all.

Bob
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