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#1
08-06-2007, 04:04 PM
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Vacuum Hose Leak?
I think I might have a vacuum hose leak. Many times when I press the clutch in, or take the car out of gear, the RPMs drop down to about 400 and the car feels like it's going to die. I hear a hissing noise, when driving down the road. I thought it was an exhaust leak, but I felt and listened for leaks and I have none. My MAF sensor has been freshly and safely cleaned and my CAI filter is 2 days old.
If it is a hose leak, whats the easiest and quickest way to find it? A friend of mine who used to work in a shop said spray the hoses with WD40 and look for bubbles, but that seems like it would take a lot of WD40 and a lot of time with the 20 different hoses in the bay...... All input is appreciated.
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03 Molten Silve Spec V:Nismo SS;JWT BSR;Nismo CIA;Khumo Ecsta ASX Tires;Slotted Rotors;XS Header;Apexi WS2 Exhaust;Magnaflow Hi-Flow Cat;Nismo Coilovers;ESMMI;WRP IMS;WRP TBS;TB Port;WRP Grounding Kit 
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#2
08-06-2007, 08:15 PM
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Re: Vacuum Hose Leak?
carb cleaner works best for find vacuum leaks.
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#3
08-06-2007, 11:02 PM
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Re: Vacuum Hose Leak?
sounds like a leak from your intake, before the maf, if that helps at all. that happened to me, as i instaled my aem cai, and had a small leak. i found it and problem solved.
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2008 Mazda 6 ATX 2.3 Liters of Slowness For those 9 seconds it takes me to reach 60mph, will be the most fun ill have in this car.
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#6
08-07-2007, 12:15 PM
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Re: Vacuum Hose Leak?
^^^lol. he got ya.
__________________
2008 Mazda 6 ATX 2.3 Liters of Slowness For those 9 seconds it takes me to reach 60mph, will be the most fun ill have in this car.
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#7
08-07-2007, 03:34 PM
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Re: Vacuum Hose Leak?
Quote:
__________________
03 Molten Silve Spec V:Nismo SS;JWT BSR;Nismo CIA;Khumo Ecsta ASX Tires;Slotted Rotors;XS Header;Apexi WS2 Exhaust;Magnaflow Hi-Flow Cat;Nismo Coilovers;ESMMI;WRP IMS;WRP TBS;TB Port;WRP Grounding Kit
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#8
08-07-2007, 04:51 PM
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Re: Vacuum Hose Leak?
Quote:
__________________
03 Molten Silve Spec V:Nismo SS;JWT BSR;Nismo CIA;Khumo Ecsta ASX Tires;Slotted Rotors;XS Header;Apexi WS2 Exhaust;Magnaflow Hi-Flow Cat;Nismo Coilovers;ESMMI;WRP IMS;WRP TBS;TB Port;WRP Grounding Kit
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#9
08-07-2007, 09:35 PM
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Re: Vacuum Hose Leak?
no carb cleaner is flammable, so the idle would pick when you would over the leak (sort of like you just added a shot of gas). not sure about the diag about the leak before the maf, it would still be metered air. if that was the case you should only hear a noise, not much of a performance issue.
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#10
08-08-2007, 02:11 AM
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Re: Vacuum Hose Leak?
thats what i ment, sorry. after the maf. im still getting used to teh new laptop.
__________________
2008 Mazda 6 ATX 2.3 Liters of Slowness For those 9 seconds it takes me to reach 60mph, will be the most fun ill have in this car.
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