sucking noise

[SwordFish]

Mine makes that same kinda noise... but mine only happens when i take my foot off.... and only when in gear... (auto) i think its the vent selector pressure hose's, face/feet/windscreen etc... i know it isnt the induction noise, thats always there, the other noise i hear is louder....

Yep same prob here,

mind you im on LPG...

the problem first started after a semi-backfire (more like a coughing sound) which happened when i changed from pet-lpg.

Now whenever i take foot off, it sucks a lil.

 

[sp001in]

sounds like the flux capacity is leaking a few gigawatts of protons there mate.