1990 nissan sentra wont start
!990 Nissan sentra-If I leave it for a day or so it won't start-New battery,plugs,tune up and Carb. I notice the fuel filter is almost completely drained save for a bit in the bottom. I put a check valve thinking it would solve the problem but it did not. If I put a rag over the carb and start it will and then the filter fills up.