I have an 82 celica supra. 2.8 straight 6 dohc.<br>my problem is that one cylinder isn't firing and i don't know why!?!<br>I've checked plugs, cables, distributer. all fine.<br>if anyone knows anything about this problem PLEASE tell me anything you know about how, why, and how to correct.<br>Also what is the plastic screw with the spring behind it just on the top of the efi assembly for? <br>Any info would help greatly thanks!<br>darwin5@...

Hi. first only I want to help you. <br>I do not know if you have changed the spark plugs but this is you must make first... why? <br>because wend the plug is under pressure the resistor up more than when it is out. <br>if you have fire out and when you put into the cylinder do not have..... change this spark plug???