dgoad

Hello MT,
The truck has electronic ERG. Here is an update. I ran compression tests and all cylinders except #5 read around 105 - 110. Number 5 reads 95 +- 5. All plugs are new with only about 5 mins on them. When I pulled them to do the compression test they all are lightly coated with black soot. RICH, RICH, RICH. I put it back together again and we cranked the truck and I was looking at the injectors while it was running ( sort of ) and I got the idea that it looked like the injectors are spraying too much fuel into the TBI. So, I pulled one of the power connectors from one( the left one ) ( as looking from the front ) and stopped it from spraying fuel. Guess what? The engine runs almost perfect on just one injector. I did a swap with each injector and saw no difference as to which one was hooked up. It is now, more than likely, LEAN, but it will run up and it sounds pretty darn good. Question? This looks to me to be the car computer. Is this a reality? Can the car computer really be putting out the wrong data to the injectors? Or can the injector driver ( electronic switch ) to which the computer sends the signals be bad ( it is still inside the computer case ) and the Computer states that it is putting out the correct thing. My Code reader is not showing any codes. Thanks