I have 61 GMC v6 305 that wont start. Last time started was about 3 months ago it back fired and didn't re start. I have replace the canister type fuel filter and the inline fuel filter also. Have used two different fuel pumps 9 O' Reily and Napa and still no go. Have disconnected the fuel line and gas gets to the fuel pump and not to the carb. Tomorrow i will prime the carb with gas and see. Please any suggestions.
