wjb
Well Known Member
Does your Andair fuel pump make a racket?
I was happily surprised by how quiet the pump was when I was doing fuel flow tests last weekend with no back pressure ... purred along with a nice low hum.
However, once things are tight and pressure comes up, it makes a nasty racket. Almost like screeching sound ... it's very obvious in my first engine start video; pump is turned on on at 0:14.
https://www.youtube.com/watch?v=T6wuyqh9ejE
Is this typical, or is my pump unhappy? It's making 30+ psi in this state, so it's not slouching there.
I was happily surprised by how quiet the pump was when I was doing fuel flow tests last weekend with no back pressure ... purred along with a nice low hum.
However, once things are tight and pressure comes up, it makes a nasty racket. Almost like screeching sound ... it's very obvious in my first engine start video; pump is turned on on at 0:14.
https://www.youtube.com/watch?v=T6wuyqh9ejE
Is this typical, or is my pump unhappy? It's making 30+ psi in this state, so it's not slouching there.