Rb25 Injector Leak Question

[Kane_R32]

Hey guys, gf's R33 has a serious fuel leak from #5 injector.

Anyway being a RB20 person, RB25 is a new engine to work on, so I've removed the injectors/rail and was wondering if the "cap" seals the very top (highest point) of the injector? or is it just the "upper o-ring" that would be the upper most sealing point and culprit in this case?

Also a quick research on the interweb shows this being the upper o-ring p/n 16618-10V05. Can anyone confirm this and what our local Nissan charges per o-ring? Highly doubt they will be $2.00ea like FRSPORT (http://www.frsport.com/Nissan-Genuine-OEM-Injector-O-Ring-UPPER-SR20DET-KA24DE-RB25-RB26-VG30_p_60199.html)..

Appreciate all feedback

[ARTZ]

Top cap does nothing iirc..just holds it in there...as for o-rings just ring Nissan, but even repco or something would have similar o-rings

[boostn0199]

Just dont forgot to lube the oring b4 putting it in.

[Kane_R32]

Artz: Prefer Genuine, perfect fitment

Boostn0199: Sure will.

Thanks Gents

[Ben C34]

so what was nissans price?

[vhs2]

i am also after upper o rings.

where the hell do you get these locally!

everything seems to be in USA and i neeed these urgently ><

[Kane_R32]

Will double check when I get home, bought a set for one injector and turns out the car had SARD 800cc

Relubed the SARD's and no more leak..

so what was nissans price?

[89CAL]

Like these?

http://www.kudosmotorsports.com/catalog/nissan-fuel-injector-seal-kit-single-injector-genuine-nissan-200sx-s14-s15-skyline-r33-sr20-rb25-p-1181.html

If they are leaking its more then likely an injector problem

The fuel enters from the side (Rail) and then goes out the bottom. If the fuel is coming out the top then that injector needs to go in the bin

[vhs2]

ahh..i swear i looked everywhere on kudos motorsport website..must not of search hard enough

thanks!

[Kane_R32]

replied to wrong post...fail

Edited March 11, 2014 by Kane_R32

[colourclassic]

Taarks also sell OEM o-rings in kits.

The smaller o-ring is what seals fuel pressure from entering the plenum, the larger o-ring prevents fuel from leaking out the top.

I bought a can of silicone spray and pretty much drenched both the o-rings and fuel rail before installation to avoid damaging/twisting anything. Seemed to work pretty well.

[scotty nm35]

I can supply Oring kits for side feeds from the wholesaler, I think they were around $10 an injector last I checked. Not sure if they are OEM, but why would it matter? Nissan didn't make the Orings anyway, and rubber fuel seals have come a long way since the RB was made.

I just found out they can supply 550cc side feeds too, probably the same as Nismo's at a guess.