Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - Bubbling/knocking (but not liquid) sound aside from chirping

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- - Bubbling/knocking (but not liquid) sound aside from chirping (https://www.ft86club.com/forums/showthread.php?t=32143)

mike_ekim1024

03-27-2013 03:26 PM

Bubbling/knocking (but not liquid) sound aside from chirping

http://www.youtube.com/watch?v=X7BAU...ature=youtu.be

After the chirping started, I started using Lucas ethanol fuel conditioner:
http://www.jazzmotorsports.com/lucas...FRCmPAodqQcACg

But after a few fill-up, I notice this bubbly/boggy/diesel sound. I searched through the threads.. I can hear it in the cabin the most prominent, and not so much under the hood. Fuel pump?

Thanks!
Mike

Chimpo

03-27-2013 03:50 PM

So you've used this conditioner once and this noise immediately started, or you've used it multiple times and this noise randomly started?

stevemp5

03-27-2013 04:04 PM

I have the same sound in my cabin ! I dont no where the sound coming.....

Sigh-on-Rice

03-27-2013 05:19 PM

I have the same noise and uploaded a video of that noise too.

White64Goat

03-27-2013 05:31 PM

Sound generator tube noise?? :iono:

EL_to_TBD

03-27-2013 07:33 PM

As Sigh-on-Rice mentioned, it sounds exactly like this:

http://www.ft86club.com/forums/showthread.php?t=23845

BRZnut

03-27-2013 11:28 PM

Quote:

Originally Posted by mike_ekim1024 (Post 822341)

Sounds like a car from the 1960s with 100K miles.

thatWESguy

03-28-2013 03:17 PM

mine just started doing this last weekend, at about 10.5k. It's intermittent. My girlfriend has started calling my car the bubble car because of the noise...definitely not a manly way for your car to be described lol

mike_ekim1024

03-28-2013 03:31 PM

Quote:

Originally Posted by thatWESguy (Post 824860)

It only happens when the engine is warm and at idle, similar to the chirps. I may take it in for a checkup and see what they say. It's sounding like me using the ethanol treatment isn't a cause now.

Mike

White64Goat

03-28-2013 05:11 PM

Have you tried capping the sound generator tube yet? Might be as simple as that.

mike_ekim1024

03-28-2013 05:26 PM

Quote:

Originally Posted by White64Goat (Post 825211)

Have you tried capping the sound generator tube yet? Might be as simple as that.

I just ordered a cold air intake (the Takeda), so when I put that in next week I'll see what happens. Thanks for everyone's help!

Mike

mike_ekim1024

04-06-2013 02:08 AM

Quote:

Originally Posted by White64Goat (Post 822708)

Sound generator tube noise?? :iono:

You know.. i just installed an intake today and noticed that the round generator thing can touch near the intake.. its mounted with bushings or something and is very flexible. I havent removed that part yet.. i might take it out or put sticky foam under it and see what happens.

Hanakuso

04-06-2013 02:54 AM

Does it kind of sound like something is loose? Like plastic? I thought my valve cover was tapping but it wasn't. Haven't found the issue yet

enivid

04-06-2013 05:14 PM

I think that is the same sound mine makes which has been happening for as long as I can remember. Randomly can hear it after getting off the freeway after a 30 min trip. I thought it was normal after reading this thread: http://www.ft86club.com/forums/showthread.php?t=14274

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