Kane_R32 Posted May 26, 2013 Share Posted May 26, 2013 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 Link to comment https://www.sau.com.au/forums/topic/425877-rb25-injector-leak-question/ Share on other sites More sharing options...
ARTZ Posted May 26, 2013 Share Posted May 26, 2013 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 Link to comment https://www.sau.com.au/forums/topic/425877-rb25-injector-leak-question/#findComment-6866485 Share on other sites More sharing options...
boostn0199 Posted May 26, 2013 Share Posted May 26, 2013 Just dont forgot to lube the oring b4 putting it in. 1 Link to comment https://www.sau.com.au/forums/topic/425877-rb25-injector-leak-question/#findComment-6866639 Share on other sites More sharing options...
Kane_R32 Posted May 26, 2013 Author Share Posted May 26, 2013 Artz: Prefer Genuine, perfect fitment Boostn0199: Sure will. Thanks Gents Link to comment https://www.sau.com.au/forums/topic/425877-rb25-injector-leak-question/#findComment-6866671 Share on other sites More sharing options...
Ben C34 Posted May 31, 2013 Share Posted May 31, 2013 so what was nissans price? Link to comment https://www.sau.com.au/forums/topic/425877-rb25-injector-leak-question/#findComment-6873185 Share on other sites More sharing options...
vhs2 Posted July 4, 2013 Share Posted July 4, 2013 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 >< Link to comment https://www.sau.com.au/forums/topic/425877-rb25-injector-leak-question/#findComment-6915604 Share on other sites More sharing options...
Kane_R32 Posted July 5, 2013 Author Share Posted July 5, 2013 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? Link to comment https://www.sau.com.au/forums/topic/425877-rb25-injector-leak-question/#findComment-6916155 Share on other sites More sharing options...
89CAL Posted July 5, 2013 Share Posted July 5, 2013 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 Link to comment https://www.sau.com.au/forums/topic/425877-rb25-injector-leak-question/#findComment-6917036 Share on other sites More sharing options...
vhs2 Posted July 5, 2013 Share Posted July 5, 2013 ahh..i swear i looked everywhere on kudos motorsport website..must not of search hard enough thanks! Link to comment https://www.sau.com.au/forums/topic/425877-rb25-injector-leak-question/#findComment-6917046 Share on other sites More sharing options...
Kane_R32 Posted March 11, 2014 Author Share Posted March 11, 2014 (edited) replied to wrong post...fail Edited March 11, 2014 by Kane_R32 Link to comment https://www.sau.com.au/forums/topic/425877-rb25-injector-leak-question/#findComment-7224681 Share on other sites More sharing options...
colourclassic Posted March 12, 2014 Share Posted March 12, 2014 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. Link to comment https://www.sau.com.au/forums/topic/425877-rb25-injector-leak-question/#findComment-7225851 Share on other sites More sharing options...
scotty nm35 Posted March 13, 2014 Share Posted March 13, 2014 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. Link to comment https://www.sau.com.au/forums/topic/425877-rb25-injector-leak-question/#findComment-7226426 Share on other sites More sharing options...
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