well after 25mls it started in starve of fuel , i have a in line filter that was blocked ,,, no problem as its a cleanable type .
the has been oft road for 20 years .
this has happened again so today the tank is out and i am in the process of cleaning it out.
drained off all the fuel got the tank out and put in 3gallon of brick acid blocked up the filler hole and the feed pipe .
i am now turning the tank every hour it will take around 4-5 hours to clean but should be fine when done
the acid cost around £8 per gallon and can be saved for future use !!!!