Injector O-ring size

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Aug 6, 2020 | 09:19 PM

finn_the_flying_fox

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From: Upstate NY

Injector O-ring size

I had a leaky o-ring on the injector fuel rail on my 92 LT1, so I went down to my local parts store that said Fel-Pro ES 70599 O-rings were the ones to use. Cleaned everything, used soap like you are supposed to installing them, and they now leak worse than before!

Anyone know what size o-rings are supposed to be used? Or preferably a part number. The injectors are the original Multec ones (yes I know they are crap, but its what I have currently).

Aug 6, 2020 | 09:34 PM

Whaleman

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Email Jon at https://fuelinjectorconnection.com/. He will know. Dan

Aug 7, 2020 | 08:57 AM

Red86Z51

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The correct size you need are .296" ID x .574" OD.

Aug 7, 2020 | 08:58 AM

Red86Z51

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Aug 7, 2020 | 06:34 PM

finn_the_flying_fox

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Update:

Gas seems to be coming out of the middle of the injector where the plastic meets the metal. Is this even possible? Also, the fuel injector plugs are full of gas on some of them. Is this normal?

Aug 7, 2020 | 09:07 PM

Whaleman

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Maybe time for new injectors. Dan PS: You already know it is not "normal".

Last edited by Whaleman; Aug 7, 2020 at 09:08 PM.

Aug 7, 2020 | 09:28 PM

finn_the_flying_fox

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Quote:

Originally Posted by Whaleman

Maybe time for new injectors. Dan PS: You already know it is not "normal".

Yea, I've already ordered a set of Bosch 3s from FIC, hopefully that'll solve the issue

PS: I figured as much, but I've seen weirder automotive designs, so I wasn't sure :P

Aug 8, 2020 | 06:15 AM

Whaleman

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Quote:

Originally Posted by finn_the_flying_fox

Yea, I've already ordered a set of Bosch 3s from FIC, hopefully that'll solve the issue

PS: I figured as much, but I've seen weirder automotive designs, so I wasn't sure :P

They will work great!!! Dan