It's no good spilling fuel out that you want to take in! (6)
I believe the answer is:
engulf
'you want to take in' is the definition.
I can't judge whether this defines the answer.
'it's no good spilling fuel out' is the wordplay.
'it's no good' becomes 'ng' (abbreviation).
'spilling' indicates an anagram.
'out' means one lot of letters goes inside another.
'fuel' with letters rearranged gives 'eulf'.
'ng' put inside 'eulf' is 'ENGULF'.
'that' is the link.
Can you help me to learn more?
(Other definitions for engulf that I've seen before include "Flu gen (anag) - overwhelm" , "Swallow up like whirlpool" , "Surround or cover completely" , "Swallow up as waves might" , "Immerse, cover completely" .)