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non-return breather valve A910E6863F
Posted 19 May 2011 - 03:05 AM
1989 Esprit Turbo
Posted 19 May 2011 - 07:11 AM
Posted 19 May 2011 - 07:10 PM
If there is something else in there then I had better get one.
Posted 19 May 2011 - 10:00 PM
Posted 25 May 2011 - 07:12 PM
Posted 25 May 2011 - 08:33 PM
Air should flow through from white side to black. You can usually find ones that will work in any auto parts store on the "fix-it" rack although the ones I've found had smaller diameter stems and I had to replace part of the vacuum line to make them work.
Here's a similar one from NAPA part # CRB 21015
For Sale SOLD
Posted 26 May 2011 - 10:37 PM
Posted 27 May 2011 - 02:03 AM
There are two (one on each side of the manifold) and the black side is nearest the manifold on each side, but I'm also trying to understand "why."
Edited by smikey, 27 May 2011 - 02:04 AM.
Posted 27 May 2011 - 04:19 AM
The one on the rear is part of the crankcase breather sysem and allows crankcase fumes to be sucked back into the manifold at low rpm instead of being released into the air through the air box.
The one on the front of the manifold is part of the fuel vent sytem and charcoal cannister and allows fuel fumes from the cannister to be sucked back into the manifold at low rpm when the manifold is producing vacuum. This is controlled by a solenoid on the charcoal cannister and the ECM.
Without the one-way valve at higher rpms and the engine creating pressure in the manifold, that pressure would be released to atmosphere or basically an intake manifold leak and the engine runs like poop...
For Sale SOLD
Posted 28 May 2011 - 12:05 AM
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