Hissing noise. Can't find the source *vid*

J

Jo060

Member

:

2015

• Apr 22, 2011

• #1

I've had this hissing noise going on since I've had the car. I haven't had time to test for any leaks. It's very hard to tell where it's coming from but seems as though it's in the area of the BPV to the intake mani. I don't think it's the CAI, it doesn't sound like it's coming from that area.
Maybe this video will help?
http://youtu.be/JXRZ9D1vix0

 

Last edited: Apr 26, 2011

J

Jo060

Member

:

2015

• Apr 25, 2011

• #2

Bump

 

B

bassjas12

Member

:

2003 Mazdaspeed Protege #704

• Apr 25, 2011

• #3

Tried watching your video to see if it was similar to what I was seeing from my car.... but it wouldnt load... Maybe put it up on youtube???

 

J

Jo060

Member

:

2015

• Apr 26, 2011

• #4

Alright. I'll load it up now.

 

T

Tzar177

Member

Contributor

• Apr 26, 2011

• #5

Sounds like maybe a leak at the throttle body

 

J

Jo060

Member

:

2015

• Apr 26, 2011

• #6

Tzar177 said:

Sounds like maybe a leak at the throttle body

Click to expand...

Very well could be. It definitely sounds like it's in that area.
Is the best way to check with a boost leak tester?

 

G

Guest20182

• Apr 26, 2011

• #7

Bad PCV or a crack in the PCV hose that goes to IM?

 

J

Jo060

Member

:

2015

• Apr 26, 2011

• #8

ZoomZoom06 said:

Bad PCV or a crack in the PCV hose that goes to IM?

Click to expand...

I wouldn't have thought of that.
It's probably time for the PCV to be changed anyway. Do you guys suggest just an OEM replacement or millennia?

 

G

Guest20182

• Apr 26, 2011

• #9

Jo060 said:

I wouldn't have thought of that.
It's probably time for the PCV to be changed anyway. Do you guys suggest just an OEM replacement or millennia?

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I don't own a MSP, but for what the cost difference would probably be, I say OEM. Make sure you check the hose and the valve itself.

 

B

bassjas12

Member

:

2003 Mazdaspeed Protege #704

• Apr 28, 2011

• #10

Hissing from my car sounds to be coming from the other side of then engine from yours. Anyone have any ideas on that?

 

S

StealthWyvern

:

03.5 YLW MSP

• Apr 28, 2011

• #11

Easiest way to find leaks is a smoke machine.... a boost leak tester would work as well and use soapy water to spray around looking for leaks in the form of bubbles...

bassjas12 said:

Hissing from my car sounds to be coming from the other side of then engine from yours. Anyone have any ideas on that?

Click to expand...

injector leak more then likely... just do aboost leak test.

 

J

Jo060

Member

:

2015

• Apr 28, 2011

• #12

bassjas12 said:

Hissing from my car sounds to be coming from the other side of then engine from yours. Anyone have any ideas on that?

Click to expand...

Those smoke machines are pretty neat. The shop by me wants $80 to test. That's absurd.
I have pretty powerful fog machine at home. I wonder if I could use that?

 

S

StealthWyvern

:

03.5 YLW MSP

• Apr 28, 2011

• #13

Jo060 said:

Those smoke machines are pretty neat. The shop by me wants $80 to test. That's absurd.
I have pretty powerful fog machine at home. I wonder if I could use that?

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i doubt the fog machine would put the system under any presure at all but worth a shot.. i wounder if you coudl get your air compressor to inhale the fog/air and use a boost leak tester... ghetto smoke machine?

 

J

Jo060

Member

:

2015

• Apr 28, 2011

• #14

StealthWyvern said:

i doubt the fog machine would put the system under any presure at all but worth a shot.. i wounder if you coudl get your air compressor to inhale the fog/air and use a boost leak tester... ghetto smoke machine?

Click to expand...

haha worth a try!