Injector seals leak

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Jul 20, 2018 | 02:27 PM

BrunoBoy650

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Injector seals leak

Hi guys,

I have searched the forum but need some help. I was boost leak checking my 03 evo 8 and I found that the lower seals are leaking pretty bad. Primarily the two closest to the timing belt. I have replaced the o rings and insulators with Oreillys part number I found on here. No luck with the new seals as they still leak. I tried adding an o ring to the top portion under the rail to give it more pressure when locking them down and still leaking. I have OEM fuel rail with RC1200 injectors and stock intake manifold. Please let me know what to do.

Jul 20, 2018 | 04:13 PM

MinusPrevious

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Years ago i went down this road trying to use "off the shelf" inj seals. I remember measuring them w/calipers noting a significant difference from OEM

I ordered OE seals!

Jul 20, 2018 | 05:15 PM

BrunoBoy650

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Quote:

Originally Posted by MinusPrevious

Years ago i went down this road trying to use "off the shelf" inj seals. I remember measuring them w/calipers noting a significant difference from OEM

I ordered OE seals!

thats what I was afraid of, buy once cry once I guess lol. I just went with everyone’s recommendation of the BW kit from a thread dated years ago. I also saw threads where people used spacers or grinder down spacers.

Jul 20, 2018 | 05:23 PM

hutch959

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the FIC seal kits work also...
i think they are $25 for all of them.

Jul 20, 2018 | 05:24 PM

MinusPrevious

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Found my older post from 2012. Wonder if this is the same seal you used (BWD 274531)
https://www.evolutionm.net/forums/ev...uto-parts.html

Last edited by MinusPrevious; Jul 20, 2018 at 05:38 PM.

Jul 20, 2018 | 05:57 PM

BrunoBoy650

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Quote:

Originally Posted by hutch959

the FIC seal kits work also...
i think they are $25 for all of them.

Any special version of it?

Jul 20, 2018 | 05:58 PM

BrunoBoy650

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Quote:

Originally Posted by MinusPrevious

Found my older post from 2012. Wonder if this is the same seal you used (BWD 274531)
https://www.evolutionm.net/forums/ev...uto-parts.html

That is the kit, oreillys uses a different part number now though that replaced that kit.

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Jul 20, 2018 | 06:09 PM

MinusPrevious

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Quote:

Originally Posted by BrunoBoy650

That is the kit, oreillys uses a different part number now though that replaced that kit.

LOL, read my post from 2012. A fountain of E85 spraying from that BWD 274531 seal

Good catch on your part, as well

Jul 20, 2018 | 06:32 PM

BrunoBoy650

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Quote:

Originally Posted by MinusPrevious

LOL, read my post from 2012. A fountain of E85 spraying from that BWD 274531 seal

Good catch on your part, as well

Its funny because I read your post before I bought the seals but overlooked them not working with RC injectors. So OEM works?

Jul 20, 2018 | 06:53 PM

#10

MinusPrevious

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Yes, Thats what i ended up going with

Jul 20, 2018 | 08:32 PM

#11

BrunoBoy650

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Quote:

Originally Posted by MinusPrevious

Yes, Thats what i ended up going with

were you good with the rail seal and spacer from the kit? Also did you need to use any other spacers?

Jul 21, 2018 | 05:03 AM

#12

MinusPrevious

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Quote:

Originally Posted by BrunoBoy650

were you good with the rail seal and spacer from the kit? Also did you need to use any other spacers?

i just used the upper O-ring of the BWD kit. The OEM seals were used at the intake port location (no added seals or spacers)

Jul 21, 2018 | 07:43 AM

#13

BrunoBoy650

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Sounds good. Thank you.

Jul 22, 2018 | 04:17 PM

#14

BrunoBoy650

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Quote:

Originally Posted by MinusPrevious

i just used the upper O-ring of the BWD kit. The OEM seals were used at the intake port location (no added seals or spacers)

boost leak solved. While I’m waiting for OEM to arrive I went to Home Depot Racing and picked up Everbuilt 3/8 Neoprene grommets, installed and the only one leaking boost was the one closest to the timing belt. Added an oring between the fuel rail and the middle injector spacer and re boost leaked checked. 30 psi and no leaking out of any seals.