Fuel talk on-line after first name comes out (8)
I believe the answer is:
gasoline
'fuel' is the definition.
(gasoline is a kind of fuel)
'talk on-line after first name comes out' is the wordplay.
I cannot really see how this works, but
'talk' could be 'gas' (I've seen this before) and 'gas' is located in the answer.
'on' could be 'o' (I've seen this in other clues) and 'o' is located in the answer.
'line' could be 'l' and 'l' is found in the answer.
'first' could be 'i' (I in Roman numerals eg Elizabeth I) and 'i' is found within the answer.
'name' could be 'n' (common abbreviation e.g. on forms) and 'n' is found in the answer.
A single letter 'e' remains which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
(Other definitions for gasoline that I've seen before include "American petrol in full" , "US petrol" , "Sole gain (anag.); petrol" , "US fuel" , "Fossil fuel" .)