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3.1 Fuel injector rail removal & installation


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Posted

Ok... I have a '91 Grand Prix with a 3.1. It's been hard starting, rough idling, and progressively worse gas mileage. Not to mention the smell of raw fuel, and black smoke when it kicks over. I traced the problem (hopefully) to the Fuel Pressure Regulator valve. I scored one at the junk yard, but had to use a pinch bar to pop the fuel rail (with the injectors attached) out of the donor car once it all been unbolted because it was so stubbornly stuck. I had hopefully thought that the injectors had been settled in because of the rubber O-rings and that's why is was difficult. Does anyone have any tips for taking the fuel rail out and installing it? I'm afraid that after I take mine apart I won't be able to force the rail back in if it took so much leverage to get it out. I wondered about leaving the injector rails in the engine, and spreading them a little to get the Pressure Regulator out, but I obviously don't want to break anything. Any tips would help, my car needs it!! Thanks

Posted

use new o-rings when you re-install, make sure everything is clean and coat the o-rings with vaseline or trans assembly gel.

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