So, as implied by the title, I have been experiencing a very strange (but consistent) problem with a fuel injector on my 1979 280zx coupe. Upon startup, injector #3 will leak fuel from the interface where the plastic electrical connector and rubber hose are riveted together, but only for about 10-90seconds after startup. After this time lapse (presumably the injector is beginning to warm up), the leak will stop and never leak again for as long as the engine is warm (even with repeated startups; for example, after turning off the car, going into the gas station, coming out and restarting, no leak). I have read in the past that fuel injectors that leak at this location (between the plastic connector and hose rivet) are not repairable, and the only option is to replace it with a new one. I'm not really opposed to replacing the injector, but my issue is the fact that this same issue has happened to me in the past 2-3yrs with previous injectors (I replaced all the stock injectors and injector wiring with MSA injectors and wiring about 8yrs ago). For some reason, every once in a while, one will start this "cold leaking" issue, and I will eventually replace the injector entirely (I've done this twice now).
Do you guys have any clue why this leaking issue would only happen while the injectors are cold, and not while warmed up? Is there any way to repair an injector with this issue? And probably more importantly, do any of you have any experience/suggestions with replacement fuel injectors and have any suggestions as to where I can get some that will last longer than these currents POS's i seem to be buying. Thanks a ton in advance guys!!