How do you spell the sound of a backfire?

There's no single perfect spelling for the sound of a backfire. It depends on the context and the specific sound you want to capture. Here are some options:

Onomatopoeia:

* BOOM! (Simple and loud)

* BANG! (Shorter and more forceful)

* POP! (Quieter and more sudden)

* SPLUTTER! (More like a misfire or engine issue)

* KABOOM! (Exaggerated and dramatic)

* BACKFIRE! (More literal but less evocative)

Descriptive words:

* A loud, explosive roar

* A sudden, sharp blast

* A fiery crackle

* A metallic clang

* A deafening thunder

You can also combine these options for a more detailed description:

* "The engine coughed, then sputtered, followed by a loud BANG!"

* "The backfire erupted with a fiery crackle and a KABOOM that shook the ground."

Ultimately, the best way to "spell" the sound of a backfire is to use the words that best capture your desired effect.