[Shrewcub]

Originally Posted by J-Mech

I say fuel pump.

But how do you "hear a puff"?

puff [puhf] Show IPA
noun
1.
a short, quick blast, as of wind or breath.
2.
an abrupt emission of air, smoke, vapor, etc.
3.
an act of inhaling and exhaling, as on a cigarette or pipe; whiff.
4.
the sound of an abrupt emission of air, vapor, etc.
5.
a small quantity of vapor, smoke, etc., emitted at one blast.

#4 I say fuel pump too.