Working on a buddys car for him a 1976 V8 Seville. Multi- port injection. New battery and alternator. Fuel pump works and there is pressure at the fuel rail. Starter works but can't get this thing to start. Where to start? Don't know much about these cars. I know the air temp sensor is broken and out of the car...the hole in the intake manifold is pluged with a bolt and the plug is disconncted. Would this cause the car not to start? Was this way before and the car ran without it...now it won't start. Also how do you read trouble codes on these cars? Is there a code reader you can buy? I found the computer under the das but can't see where you would plug a code reader into? Any help you guys can offer would be great. I know cars but othing about these ones...lol. Thanks guys!