Quick fuel connection leaking at rail - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 11-04-2009, 07:06 PM   #1
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Default Quick fuel connection leaking at rail

One of the quick connect fuel fittings is leaking where it connects to the fuel rail. This is on a 99 SE. Is there a way to change the fitting or do I have to change the whole line back to the metal fuel line? What is the best way to fix the problem?
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Old 11-04-2009, 07:21 PM   #2
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Happened to me too, I drained the fuel pressure, took the line off, cleaned it up and put it back on
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Old 11-04-2009, 07:26 PM   #3
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Already tried that. Helped for a bit but it is leaking again.
Wonder if cleaning the line with emery cloth will help?

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Old 11-04-2009, 07:33 PM   #4
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It'* not as much the hard line but an O ring in the connector I think
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Old 11-05-2009, 08:23 AM   #5
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Yes, most freuqently an o-ring fixes it up.
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Old 11-05-2009, 11:26 AM   #6
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Make sure you add a couple of drops of oil to lubricate so it doesn't tear the O ring inside the female half when you put it back together.
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Old 11-11-2009, 06:33 PM   #7
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Looking inside the connector I see some white rubber, then a black O ring, then another white rubber piece. Not sure if the white rubber is all one piece. Does all this need to be changed or only the black O ring? How do I get the O ring out without damaging the white piece? Looking a RockAuto, their fuel rail O ring kit looks to only contain black O rings.
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Old 11-11-2009, 07:56 PM   #8
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Alexm there is two o-rings with a hard white plastic spacer separating them.
Those things a frustrating to replace because the fuel line wants to point down.

I had to modify a dental pick to use to remove the o-rings.

Most auto parts stores carry the viton fuel line o-rings you need.
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