I have a question for you Mr. Kilmer. I have an 1984 vw Vanagon that runs like a real champ. Everything is original in it but a time from now it began to shut down when I release the accelerator. I don't know if the carburetor needs to be cleaned or replaced. Also, could you explain me how to flush the radiator because I'm confused since the radiator is in the front but the container is in the back with the engine. Thank you.