Alright thank you! Then you aim the gun at the Crankshaft pulley. What are you looking for when you aim it at that? I got my car to run when I rev the engine, but it dies if you let it idle. I reconnected up vacuum lines from the service manual, so those should be good to go. I'm starting to think it is the idle unit that is bad. I'm going to remove it tomorrow and perform tests on it.