31-12-2020, 08:48 PM
(This post was last modified: 31-12-2020, 08:54 PM by Ian McGowan.)
Before removing the tank, apply a little science to the problem. Turn off the petrol at the tap, disconnect the fuel pipe from the carb and insert into a 1 pint empty bottle; turn on the fuel tap and time how long it takes to fill the pint bottle. Some of the petrol taps have a very fine mesh filter integral with their construction. I found that one fitted to my 1929 AD chummy was so fine mesh that it reduced the rate of flow below that required to drive at any speed. If it takes more than 5 minutes to fill the pint bottle, flow rate is your problem. It might be a blockage or restriction due to filters. Investigate this by emptying the tank and removing the tap, check for any blockage at the tap etc.