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Boost Leak from MAF sensor

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Old Sep 8, 2008 | 03:07 PM
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Default Boost Leak from MAF sensor

hey guys Im gettting a Boost leak from my MAF sensor, it is actually coming out from the sides, I was wondering if anyone has ever made a gasket for it, or it there is something Im missing. I have both screws in it but it still leaks
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Old Sep 8, 2008 | 03:09 PM
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Did you remove it at all/ re-install it correctly??
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Old Sep 8, 2008 | 03:17 PM
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yeah it only fits in the hole the one wayto screw in
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Old Sep 8, 2008 | 03:20 PM
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Ok, cause the screws are on opposite ends which can be reversed...

I do have an extra maf btw if you need one.. Ill sell it cheap..
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Old Sep 8, 2008 | 03:33 PM
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my maf is good just the housing leaks I might use like some silicone to seal it around the edges
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Old Sep 8, 2008 | 07:13 PM
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There should be a small piece of rubber that sits between the sensor and the housing. W/ a decent used seal in there i have seem them start to leak a very minor amount by about 20psi (when pressure testing a system). Hope that helps.
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Old Sep 8, 2008 | 11:33 PM
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do you know where I can get one or a part #
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Old Sep 9, 2008 | 03:44 AM
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Your nissan dealership.
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Old Sep 9, 2008 | 08:12 AM
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how do you know thats were your leak is you can't be under the hood when your boosting did you find it while it was on a dyno?
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Old Sep 9, 2008 | 08:24 AM
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Originally Posted by frankie945
how do you know thats were your leak is you can't be under the hood when your boosting did you find it while it was on a dyno?
Build a cap to pressurize the system...back in my DSM days we built em out of PVC endcaps, a valvestem, if you have to attack to something hard you'll need a rubber "grommet" (can't remember the proper word) that has a clamp on each end.

Then you pressurize the system up to a cpl PSI above your peak boost and listen...a little soapy water can come in handy here.
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Old Sep 9, 2008 | 08:48 AM
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I have a spare MAF housing I can sell ya cheap if you need it.
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Old Sep 9, 2008 | 12:55 PM
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I know its where the leak is b/c when the car is at idle you can hear it and feel it coming out of there, Im loosing like 2psi from it its a major leak..
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Old Sep 9, 2008 | 01:09 PM
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Cool, just making sure you know thats were it's coming from, because I have a boost leak and I'm having a hard time finding it.I think it's my Bov but not sure I was go to try a fogger to find it just haven't had the time. Has anyone used a fogger on here to find a leak?
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Old Sep 9, 2008 | 03:16 PM
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Originally Posted by TinmansZ
Your nissan dealership.
willn chargge u alott
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Old Sep 9, 2008 | 04:36 PM
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I have a leak there too that I noticed when I pressure tested my system a few months ago. I need to order this gasket from Nissan too!
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Old Sep 9, 2008 | 06:11 PM
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do you know a part # they tell me that you have to have to buy the MAF sensor to get any of the parts and gaskets $600
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Old Sep 9, 2008 | 07:25 PM
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Originally Posted by turtle1678
do you know a part # they tell me that you have to have to buy the MAF sensor to get any of the parts and gaskets $600
Ouch! If that is that case that sucks! I will be looking into some black silicone or something then.
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Old Sep 9, 2008 | 09:32 PM
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sorry i can't help w/ the part number, or even if it can be purchased separately. I have heard that the 05-08 Mustang uses a very similar MAF sensor, maybe ford sells the gasket only, and could work?? I haven't tried to swap one or even looked at one in person, i just remember another tech commenting on it, so pursue that idea at your own risk!
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Old Sep 10, 2008 | 08:39 AM
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Don't show a part number in the Service Manual - only the o-ring to the MAF itself. It's probably one of those things at the dealership where you need to buy the whole piece. Bastards...
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Old Sep 10, 2008 | 09:46 AM
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I had a slight leak and hondabond took care of it.
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