spider injector

I just replaced the spider injector on my 98 tahoe and 3days later i get a sucking sound from somewhere it sounds like its coming from under my dash
you get under the hood you dont hear anything thanx (great site ):licka:

Lose vacuum hose or leak in brake booster(does sound change when you push on break pedal?)

the sound dont change even when you give it gas or the brake
i did noticed when i turn the key on i can hear the fuel pump buzz and
that sound from the motor its like a rushing sound of fuel or pressure.

If the HVAC stuff is vacuum operated, you probably have a break in the line. Find where it goes through the firewall and disconnect it, if it goes away then, start digging around under the dash 'till you find it.

I found out what the noise was it was the fuel line touching the firewall
man the sound was loud cant believe it amplified it that much well many
thanx