xbladex00

So... I had the hood open and when i pressed the gas it makes a short hissing noise of some sort... I'll try and get a video tomorrow... it only lasts for about 1-2 seconds not sure if its just induction noise...

pman6

that's turbo boost

xbladex00

LOL its a GS 350 V6 3.5 liter no turbo its stock

pman6

haha i know

designo

iTrader: (6)

It's your air filter!

xbladex00

it sounds like its coming from the intake manifold.... I didnt get the recall done yet about the fuel leak....

Gotcha350

It's the air rushing through the intake...to help make that 303 HP...

xbladex00

hopefully you guys are right and im just being paranoid.... also not sure how the DIG (direct injected gas) works... sometimes i hear a ticking and then it just goes away but i think i hear 2 ticking sounds probably just the engine and the DIG sounds out of sync maybe?

rxmpvibes

Not sure...could be a loose vacuum hose or something?

SILENTM

The high pressure fuel pump will make a ticking noise as it is driven by the right camshaft and also the second ticking noise will be coming from all the injectors. The valves may tick until oil warms up and the hydraulic lifters start to work. Another noise you may hear for a few seconds after a cold start, towards the front of the engine are the intake cam adjusters. There was a updated part for those to solve that issue.

TRD_Power

I hear a bit of a hissing/light whistling noise in my 460 whenever I punch it. Pretty normal for these cars.

jdmek998

Its normal. Just your intake/ throttle body sucking in air. If you have an aftermarket intake it gets louder.