97GTPFreak Posted April 17, 2012 Report Share Posted April 17, 2012 Ok So I have owned my GTP Since Feb 8th and I am finding more more and more crap that this douche bag did to this car well now I found out I am leakinf gas from the very first injector on passenger side of motor! I have been told its the O-Ring! But now my question is how can you tell if its the o-ring or the injector???and also is there a oring in the fuel rale itself? please please help! Any tips and advice is greatly appreciated! Thanks Amber:think: Quote Link to comment Share on other sites More sharing options...
ricklovin93 Posted April 17, 2012 Report Share Posted April 17, 2012 I've never heard of an actual injector leak, its usually the o-ring Quote Link to comment Share on other sites More sharing options...
White93z34 Posted April 17, 2012 Report Share Posted April 17, 2012 wheres it leaking from? there is a O ring on both the top and bottom of the injector. if they were installed without oiling/greasing up the ring before install it can rip and cause that. Quote Link to comment Share on other sites More sharing options...
Schurkey Posted April 17, 2012 Report Share Posted April 17, 2012 I'd expect it to be the upper, fuel rail-to-injector o-ring. If defective, the upper O-ring would leak any time the fuel pump was running, and for awhile after shut-down, too. The bottom O-ring is sealing vacuum, not fuel pressure. Another possibility: Cracked fuel rail, or cracked fuel rail "cup" that the O-ring seals against. Quote Link to comment Share on other sites More sharing options...
97GTPFreak Posted April 17, 2012 Author Report Share Posted April 17, 2012 Im praying its just the o-ring cause a new injector I priced at oreilys and they told me 85 bucks! and see the guy I bought it from said he home bored the blower so... maybe he nicked it when he was fucking around under there and the way the fuel flows is like a waterfall from top of injector to the bottom Quote Link to comment Share on other sites More sharing options...
97GTPFreak Posted April 17, 2012 Author Report Share Posted April 17, 2012 yes you are right it is while running and shortly after shut down it looks a waterfall leaks from top to bottom and the guy before me home bored the blower I guess so Im thinking maybe he nicked it while he was under the hood and messing with that Quote Link to comment Share on other sites More sharing options...
White93z34 Posted April 17, 2012 Report Share Posted April 17, 2012 hopefully its just that. if the injector is actually broken you could probably find one on craigslist or in the classifieds here for far less then $85 Quote Link to comment Share on other sites More sharing options...
97GTPFreak Posted April 17, 2012 Author Report Share Posted April 17, 2012 I really hope its just the O-ring! so now my next question how easy is it to change that top o-ring? Quote Link to comment Share on other sites More sharing options...
Schurkey Posted April 17, 2012 Report Share Posted April 17, 2012 I really hope its just the O-ring! so now my next question how easy is it to change that top o-ring? Changing the O-ring couldn't be easier. Peel the old one off. Lube the new one with damn near anything--a drop of motor oil, a touch of silicone grease--and push the O-ring into the groove on the injector body. Push the injector body back into the fuel rail. The problem is GETTING TO the O-ring. I don't know what that involves on YOUR car, but on mine, the upper intake manifold has to come off, which means opening up the cooling system and disconnecting various accessories in order to get the upper intake off the engine. Then the fuel rail is held down by two or three small bolts. Bolts removed, the fuel rail and all six injectors pull off with a firm tug--the only thing holding the injectors in place is the O-rings top and bottom. I'll take a picture of the fuel rail from a '93 3.4 DOHC. Mine's been apart for months waiting for me to get the ambition to start work on it again. Quote Link to comment Share on other sites More sharing options...
White93z34 Posted April 17, 2012 Report Share Posted April 17, 2012 on your GTP its not bad, not all that much is obstructing it. Quote Link to comment Share on other sites More sharing options...
97GTPFreak Posted April 18, 2012 Author Report Share Posted April 18, 2012 thanks now I just get to figure out how to get to the fuel rail in order to remove the old o-ring :-/ Quote Link to comment Share on other sites More sharing options...
Red Nightmare Posted April 24, 2012 Report Share Posted April 24, 2012 if you do the work yourself - once you have the upper intake off, put rags in each of the intake holes as to not drop anything into the lower intake cause if you accidently drop a small bolt or something in there, THEN the real fun begins. If your engine is anything like mine, there are some tiny bolts and brackets holding the fuel railings to the engine. Very easy to lose. Also - don't forget about the junkyards if you need to get a new injector. when you remove the old one, you may have to pull the entire fuel rail. if they don't come out fairly easy, just drop some lube in each injector insertion. Quote Link to comment Share on other sites More sharing options...
97GTPFreak Posted May 1, 2012 Author Report Share Posted May 1, 2012 We got it changed and man it was super easy went to Junkyard got the new injectors and new o-rings! Although I did loose a fuel rail bolt but got a new one put it on and good as new!!!! now if I can just get it to stop sounding like its missing that would be great! but she runs amazing! And hell of a lot better fuel mileage now! Quote Link to comment Share on other sites More sharing options...
Penglii Posted May 1, 2012 Report Share Posted May 1, 2012 Wherever you had the bad injector you probably need a new spark plug... that might cure the miss. Quote Link to comment Share on other sites More sharing options...
RareGMFan Posted May 5, 2012 Report Share Posted May 5, 2012 I'm hoping you got brand new o-rings, and didn't reuse junkyard ones. Considering how prone these are to failing (many still believe that THIS is the true culprit of the 3800 engine fires, not the "front valve cover gasket" BS the GM recall claims), and how cheap they are new, it would be silly to reuse 10+ year old o-rings. Quote Link to comment Share on other sites More sharing options...
Red Nightmare Posted May 8, 2012 Report Share Posted May 8, 2012 I guess then you do not know at this point if it was the O-rings or injectors that were leaking? You said both were replaced. Quote Link to comment Share on other sites More sharing options...
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