Noise in 1st/2nd - NOT clunk, clank, whine

Davey

I've done several searches using Google on the site, and I have not really seen this one.

I know about the clank/clunk from 1st to 2nd, and I know what "gear lash" (that whining noise) is and this isn't about that, and trust me, I'm not bitching about a little noise here and there in a sports car, just not familiar with this one... Here's the best I can describe it.

It's kind of a pulsating, "pfft" sound, almost like an exaust leak at the manifold on 1 cylinder, if you have ever heard that, and it changes with engine RPM.

How to make it happen/hear it:

- Rolling along slowly in 1st or 2nd gear, coasting, then step on the gas *lightly* at about 2000 RPM

- You can hear it better with the driver's window down

- I mainly hear it in my neighborhood pulling away from a stop really slow (25 is fast around there) or creeping through a parking lot.

- I have never noticed it when the car was cold, definitely every time I have heard it, the car has been hot/driven for 1/2 hour+, but I don't know for sure that it doesn't do it cold.

- It's pretty quiet and if you get into the throttle or the engine revs above 2300 RPM or so I can't hear it anymore, but my hearing is not the best.

Does this sound familiar? Could it be the injectors?

Thanks for any serious replies.

Jeffblue

my best advise is to record a video or sound clip and post it to youtube so we can actually hear it. it's pretty hard to describe sounds accurately enough to have anyone diagnose your problem.

Davey

I appreciate the response.

If there is actually a problem I will take it to the dealer - he's just a few blocks away.

I just don't want to make a trip for nothing.

kenchan

check under the hood.... someone may have installed a turbo-simulator while you were out partying.


take it into your dealer.

Davey

Ha ha...

It doesn't sound like a turbo... I am probably just being paranoid. I remember when I noticed my 350Z's injectors after having it for a few weeks, pulling into my garage, I thought my valvetrain was coming apart.

red6spd

Is the car stock???

__________________
2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness.
???Whp ???WTQ (Will find out come spring time)

TreeSemdyZee

Mine makes a pfft noise, but it's generally after a healthy portion of White Castles.

Where are you located? I'm in Clarksville.

Davey

Yes, completely.



Indy.

red6spd

Hmmmm not sure. Just add an exhaust and you wont hear it no more K!!!!!!!!!

__________________
2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness.
???Whp ???WTQ (Will find out come spring time)