Rob I take your point, however I was not thinking too clearly at the time - panic set in....
The saga at the rest stop started (or not as the case may be), when initially the engine started OK, but then, moved about 15 feet out into the way of oncoming traffic then stopped. I thought, mistakenly, that blipping the throttle I had flooded the carb.
All this so far on the mechanical pump.
Thinking the carb to be flooded I floored the throttle - as you do - and kept cranking. THEN I THOUGHT!
Soooo...with the aid of an override switch that brings in an electric fuel pump .... need I say more.
Of course THINKING AGAIN it is along way for a mechanical lift pump on the engine to pull the fuel some 25 feet away. So now the electric pump is put to good use ..more often!
Bob, Yes I agree increasing fuse blowing amperage is not good practice, and yes I was silly to that, but at the time desperation and the lack of 20 amp fuses forced the issue a bit. It also made me realise this was not going to go away - silly me thinking that it may be a bit of damp or whatever, but One does tend to 'grasp at straws' in desperation.
Perhaps I should stop thinking! ............. Wrong! Think more - act later!
And before any one notices ..... the new battery is on order! I say order because the side connection type are hard to find here.