Purchased a 1982 C3 three years ago with 72,000 miles on it. Garaged kept and only drive it on nice days. 3 months ago I went to start it and it wouldn't start. I sprayed starting fluid in the carbs and it started briefly. So now I,m thinking the fuel pump has gone out. It could be the original. I replaced the fuel pump. ( Why don't they include the little filter that goes on the bottom of the fuel pump with the new one. Makes no sense.) Still didn't start. Then I found out there's another filter on the front rail. Changed that and it still didn't start. ANYBODY WITH ANY IDEAS WHAT I SHOULD DO NEXT ?