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what is this? and how important?

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Old 03-12-06, 05:43 PM
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numba 1 stunna

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what is this? and how important?
its located right beside the intercooler bracket on the drivers side.. any help is appreciated..thanks
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Old 03-12-06, 05:52 PM
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Engine, Not Motor

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That is the purge valve. It is important. The thick hose on the bottom connects to the nipple on the center iron. The top connection goes to a vacuum source and the bottom small nipple connects to a nipple before the throttle body. The vacuum diagram that you need to connect this is in the Factory Service Manual (see FAQ).
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Old 08-28-06, 01:41 PM
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what's the use??
what does this thing do? how does it affect HP? how important is it really? how does it affect the engine spceially when I already have a 13b to TII intake conversion for my j-spec s4.
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Old 08-29-06, 03:16 PM
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Engine, Not Motor

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Look it up in the FSM. It's the Mazda equivelant of the PCV. It vents combustion vapours from the crankcase.
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Old 08-29-06, 03:19 PM
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Could not having a purge valve ever prevent your car from running? In the Haynes manual it lists it as a possible cause of your car starting and dying.
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Old 08-29-06, 03:21 PM
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Engine, Not Motor

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If the purge valve leaks, it can become a vacuum leak.
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Old 08-29-06, 03:34 PM
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Originally Posted by Aaron Cake
If the purge valve leaks, it can become a vacuum leak.
dammit... how the hell... do you know these things? Can i borrow your brain for a while? =P
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Old 08-29-06, 03:41 PM
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Engine, Not Motor

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I read the FSM.
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