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Holley fuel rail.. which injector o ring??

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Old 09-20-2016, 05:19 AM
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Default Holley fuel rail.. which injector o ring??

I am leaking a lot of fuel from my injector/rail side. What size o-rings do these use? Bigger than stock? I have ls1 injectors on a fast 102 with Holley rails. Also used the spacer kit for the rails. Need to find rings tomorrow! Thanks!!!

Tim
Old 09-20-2016, 05:20 PM
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stock O-rings should work... did you reuse your old ones??
Old 09-20-2016, 05:23 PM
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Bought new. Tried the old ones as well. They both leak badly. Can't figure it out at all. Just got off line with Holley they are sending me some o-rings as well. I just don't see why stock shouldn't work.
Old 09-20-2016, 05:47 PM
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I know when I redid my fuel system I had leaks at the rails (billet), so I took the intake off therefore I could line everything up perfectly and get it leak free.. also helps to put a little silicone grease on the O-rings to slide in better..


been leak free since.. trying to align everything with half the engine under the cowl is a major bitch.
Old 09-20-2016, 07:07 PM
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Mines on a cts-v. Alignment seems pretty simple. It's the spacers for the rails etc that don't seem perfect. I tighten it up and it pulls the injectors out of intake some. maybe I'll try all that again. I really don't like how it fits. I'd think the rails would bolt on much smoother
Old 09-20-2016, 10:41 PM
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I'm curious if I've mounted the spacer bracket upside down. I'll have to try it when I get home. Hopefully that's it
Old 09-21-2016, 04:46 PM
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I'm getting rid of these rails. There's nothing I can do to get them to stop leaking.
Old 09-21-2016, 04:59 PM
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What rails are they?
Old 09-21-2016, 05:03 PM
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