The most common and most likely answer to this crossword clue is the 8 letter word CLANKING
I've seen this crossword clue in The Daily Telegraph
C
L
A
N
K
I
N
G
More clues leading to the result CLANKING
Buddy explains!

The straight part
We know that "making a lot of noise" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case making a lot of noise = clanking.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CLANKING mean?
CLANKING verb- To make a clanking sound
- To cause to sound with a clank.
- A noise that clanks.