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2007 Mazda6 S making hissing noise and idling rough


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ros09003
New User

Mar 19, 2017, 1:21 PM

Post #1 of 8 (280 views)
post icon 2007 Mazda6 S making hissing noise and idling rough Sign In

Hi all, I'm kind of a noob here, hoping to get some help. About a week ago I noticed that my 2007 Mazda 6 S was idling really roughly, almost stalling at times. Additionally, it was making a very loud hissing noise, sounded like it was sucking air from somewhere it shouldn't be. The check engine light came on so I had a diagnostic run on it which said it was running lean (sorry I don't have the codes written down) which wasn't a surprise. After poking around the engine a bit I found where the noise was coming from. The links to pictures I took are below. I'm not sure what this part is or what its supposed to look like, but it seems like there should be a nozzle or hose attached here where its kind of sheared off. Any ideas?

https://drive.google.com/file/d/0BzzjuvMS6_pSM3BtYjZnMzZyVWs/view?usp=sharing

https://drive.google.com/file/d/0BzzjuvMS6_pSLThCZjFodlBGX00/view?usp=sharing

https://drive.google.com/file/d/0BzzjuvMS6_pSNzVVYmg3VFNVb1k/view?usp=sharing


(This post was edited by ros09003 on Mar 19, 2017, 1:32 PM)


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 19, 2017, 1:32 PM

Post #2 of 8 (272 views)
Re: 2007 Mazda6 S making hissing noise and idling rough Sign In

Pics show a hose and a port for it apparently so what's the question? If cut or broken by something it needs to be hooked up before you are going to find more out about much.


That's easily going to make noise and idle lousy plus a host of other problems if an open vacuum leak like that. If a molded bent hose that is cut for some reason either get a new one or there are ways to make hose turn a right angle without kinking or type of hose as needed,


T



ros09003
New User

Mar 19, 2017, 1:37 PM

Post #3 of 8 (268 views)
Re: 2007 Mazda6 S making hissing noise and idling rough Sign In

Ya so thats my thought too, problem is I don't know what is supposed to attach here, or what the part is called, what the port is for, etc. I'm hoping someone here can give me a name or something so that I'll know what part I need when I go to an autoparts store, or so that I can do some more google research and figure the rest out.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 19, 2017, 1:45 PM

Post #4 of 8 (255 views)
Re: 2007 Mazda6 S making hissing noise and idling rough Sign In

There was a port right near it in the first picture. Will it reach and one of those two is probably an active vacuum leak now.

If just unplugged for unknown reasons put it back. If broken or cut is there a reason or recent messing with this?
Before anyone need go nuts there's clearly a hose unattached and doesn't matter what it is just that it go back on then worry about noise and how it idles after that,

T



ros09003
New User

Mar 19, 2017, 1:52 PM

Post #5 of 8 (245 views)
Re: 2007 Mazda6 S making hissing noise and idling rough Sign In

I was hoping it would be something easy like that too but I've looked pretty hard and I don't see any unplugged hoses just hanging freely anywhere around it. I'll try to get underneath and see how it looks from below.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 19, 2017, 1:57 PM

Post #6 of 8 (238 views)
Re: 2007 Mazda6 S making hissing noise and idling rough Sign In

Posts came out of order for an unknown reason. You have the hose in your hand and a port with nothing on it right in same picture within an inch. What is the confusion about that?
It was pulled off, fell off, broken off or something. Put it back,


T



ros09003
New User

Mar 19, 2017, 2:07 PM

Post #7 of 8 (232 views)
Re: 2007 Mazda6 S making hissing noise and idling rough Sign In

Okay, I understand your confusion now. The car was making the hissing sound with that Port attached. I remove the port and took a picture of it so that you can have a better look at it. I believe the hole that is shown in my picture is not meant to be a hole but that there should be something attached to it. I am not sure?


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 19, 2017, 2:38 PM

Post #8 of 8 (224 views)
Re: 2007 Mazda6 S making hissing noise and idling rough Sign In

OK - Good attempt at pics at this site which is tricky for some with pics. I just looked at the third pic with a broken part in your hand. That would leave the other part showing a hole or was part of a plastic elbow broken off.
Either way it would create an open leak since it's hissing a vacuum leak.


Here's the real problem. That type of plastic for hoses doesn't glue back well or at all if obvious where it goes not clear by the pics to me.


Now up to you to say if it has clearly the other end it broke off of? If so is it just a flush hole or some of the plastic left you could put a hose over?


Said - glue types are all poor at that kind of plastic near always leaving options to a whole new part or depending can tap in a brass spout all depends on exact situation.


Right now the thing you need to worry about is you see it broken, it's in your hand so can't stay connected. That leak has to be vacuum so it's absolutely going to make it run improperly noise is just telling me it's vacuum not some other something.


FYI - Engine vacuum tells of many things the engine is doing and adjusts idle speed, timing, when to shift and lots more based on the actual intake manifold vacuum which isn't correct with that broken so giving controls WRONG information so adjusting things wrong accordingly. In turn it's fouling up your converter with unburned fuel so you can't wait to fix this.


Job for you is to see if enough room and all parts there to see if it can be glued then choose a glue but not yet. I suspect you'll do better with the entire new piece with that "spout" or elbow if it was new and intact. It broke it what happened.


Your call. Do you want to do this or send this job out? No kidding that if you are at a dealer's parts counter it will show from a pic you bring just what that whole parts is and others around it by name each dinky part will have a part # and arrow on their software of parts.


You may not be up to this or bust a new one in the attempt? I really can't know if more is missing or what it would be named but you can be sure Mazda didn't put it there for a decoration so it needs it working.


Other: That type stuff gets brittle quickly when an engine runs it's hot then cold again back and forth that stuff can't take being bumped or pulling hose off improperly either or it busts.


Up to you if you can see this thru best with a whole new part,


Tom







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