What is this....
05-10-06, 11:40 AM
#1
I want a free FD....
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What is this....
I was replacing the old vacuum line on the bottom of this, the nipple snapped off with no effort. This is from an '86 N/A.
Is this thing needed for anything, if it is I can just go get a new one from the junk yard, but if I don't need it I will just bypass it. Anyone have a thought of what it is?
I do have a haynes manual, but it's at my shop so I can't look it up in there, and the FSM would take forever to find what I am looking for, thanks in advance
Last edited by DJRcustoms; 05-10-06 at 11:46 AM.
05-10-06, 11:43 AM
#4
I want a free FD....
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Originally Posted by CrispyRX7
PCV valve. Comes off the filler neck and is plumbed to the UIM right?
Crispy
Crispy
05-10-06, 11:45 AM
#6
Former Moderator. RIP Icemark.
Originally Posted by DJRcustoms
Yup, thats exactly where it comes off of, thanks man, I might as well just go get a new one from the auto store then.
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05-10-06, 12:46 PM
#8
I want a free FD....
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I circled the connections in blue, if I decide to bypass this (from what I found in the search I did) I Know the bottom left on the fill neck needs to vent to the air (or a catch can) where to the top and right connections need to go? Can I just plug them or do I need to connect them to something?
05-10-06, 04:15 PM
#12
Engine, Not Motor
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Almost every 4 stroke gas engine with a closed crankcase has some way to vent the vapours that bypass past the piston rings/rotor seals. Most of the time it is a one way check valve but Mazda designed their purge system to vent fresh air through the entire engine. Presumably because there is far less blowby in a rotary then a piston engine and there isn't as much need to maintain a slight vacuum on the crankcase. Even lawnmower engines have PCV systems. The venerable Briggs and Stratton vertical shaft 3.5 and 5HP engines have them integrated into the valve cover and venting into the carb....anyway...
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