Just wondering if anybody may know whats wrong with my car. After I have driven it for a while(i.e. 30 minutes or more) and then turn it off, go in a store for a while and then come out after 10 or 15 minutes. It starts then dies right away and will keep doing it. I have to keep my foot on the gas, put it in gear real quick and give it some gas. Then it is fine but sputters a little bit. Thanks. BTW it is a '81 280ZX