83Starion-11 Posted September 18, 2014 Report Share Posted September 18, 2014 Hey all, I recently put in a set of new 83' injectors on my 83' starion, and now I can't boost...The car is completely stock, but I have replaced more original parts then I can list. The car can idol great, rev up great (curb side), but when I get to about 3000 RPM driving, or get into the boost (in any gear), my RPM guauge skips around and the car stumbles...not sure what causes this. If anyone has any ideas or questions please let me know. There is no fuel smell and exhaust is clean, turbo feels good and Is not leaking... Could it be a bad coil pack? Timing off? Thanks! I hope to drive her again soon. -Andrew Link to comment Share on other sites More sharing options...
ucw458 Posted September 18, 2014 Report Share Posted September 18, 2014 What's your fuel pressure under boost? Link to comment Share on other sites More sharing options...
Colin Posted September 18, 2014 Report Share Posted September 18, 2014 I hope you replaced the injector clips along with the new injectors Link to comment Share on other sites More sharing options...
jisleyjr Posted September 18, 2014 Report Share Posted September 18, 2014 You actually found new injectors for an 83?? Link to comment Share on other sites More sharing options...
ucw458 Posted September 18, 2014 Report Share Posted September 18, 2014 I hope you replaced the injector clips along with the new injectors 83 injectors are completely different than 84-89 injectors. For that matter the 83 TB is also completely different. http://prozac.orconhosting.net.nz/eciguide/rebuild.html 83 injectorshttp://prozac.orconhosting.net.nz/eciguide/injectorsfitteds.jpg Link to comment Share on other sites More sharing options...
hippynerd Posted September 18, 2014 Report Share Posted September 18, 2014 Yes, I too would like to know more about these new injectors. Link to comment Share on other sites More sharing options...
Colin Posted September 18, 2014 Report Share Posted September 18, 2014 83 injectors are completely different than 84-89 injectors. For that matter the 83 TB is also completely different. http://prozac.orconh...de/rebuild.html 83 injectorshttp://prozac.orconhosting.net.nz/eciguide/injectorsfitteds.jpgLearn something new every day haha Link to comment Share on other sites More sharing options...
ucw458 Posted September 19, 2014 Report Share Posted September 19, 2014 You may want to get those injectors checked. If they are OEM new then they have been sitting on a shelf for 31+ years. They may need to be cleaned. Link to comment Share on other sites More sharing options...
83Starion-11 Posted September 21, 2014 Author Report Share Posted September 21, 2014 It took us about six months to find, and they were OEM and have been sitting since for 30 years plus, but we had them cleaned and checked and they run good, I was thinking maybe the fuel pressure is all messed up as well, but haven't been able to measure it yet :/ The company we bought them from said they were hiding on a back shelf and were the only ones left lol...they didn't even think they had them still... Link to comment Share on other sites More sharing options...
ucw458 Posted September 21, 2014 Report Share Posted September 21, 2014 Well you lucked out and probably got the last OEM new set in existence. Link to comment Share on other sites More sharing options...
MikeMeyerhoff Posted September 28, 2014 Report Share Posted September 28, 2014 fuel pressure reg and other vacuum lines double checked? Link to comment Share on other sites More sharing options...
Tim_C. Posted September 30, 2014 Report Share Posted September 30, 2014 Well you lucked out and probably got the last OEM new set in existence. Yes,I agree! Those are the only ones left, the ones the parts houses misplaced! One injector will drive fine up to 3000 RPM. Above that, or in boost, and it requires the second injector to act right. Unless your really, really feather the throttle, you can keep revving and actually drive the car. If that is the case, then there is only one injector making good connection to the harness, or one of the injectors needs cleaned like ucw58 said. Link to comment Share on other sites More sharing options...
83stariontravis Posted October 15, 2014 Report Share Posted October 15, 2014 RPM gauge skips around... Check your connections at the + and - on the coil. Mine have come loose a couple times. I don't think a bad injector would cause the gauge to skip around... Probably wrong but worth a shot. Link to comment Share on other sites More sharing options...
83Starion-11 Posted May 18, 2015 Author Report Share Posted May 18, 2015 Ok update on this. So finally got around to having the injectors cleaned and tested , they both tested good and no leaks. The paper work says 115-116cc flow??? They part on the injectors are 850cc...So I am a bit confused there. Going to talk with the guy on it tomorrow. Car runs great at idol and I can drive around, but once into boost, it studderS a bit. I am going to check fuel pressure as well when I can. Any recommendations for a fuel pressure gauge? Link to comment Share on other sites More sharing options...
83Starion-11 Posted May 18, 2015 Author Report Share Posted May 18, 2015 Connection on the coil + and - are all tight and good as well. Fuel filers are new, and fuel pump tested good. Link to comment Share on other sites More sharing options...
83stariontravis Posted May 30, 2015 Report Share Posted May 30, 2015 make sure your injector wires aren't grounding to each other or the throttle body. had this issue recently... stupid soldered injector wires... Link to comment Share on other sites More sharing options...
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