PCV Question
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Senior User
Joined: May 2003
Posts: 167
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From: Omaha, NE
PCV Question
Hello All,
Well, it's getting that time of the year again here in Nebr.
Fall's here with winter on it's way...
About this time every year I do a tune up on all of my cars,
just the basics - plugs, plug wires (if needed), cap & rotor,
filters, PCV, look over the belts and hoses, battery cables,
and adjust the engine as necessary.
Well, I usually replace the PCV if it needs it or not, but that's
what brings up my question.
The PCV that's on the truck now, has only one port on it, the
main one that goes back to manifold vacuum.
All the ones I find for my truck (86 F250 460/C6), have two
ports on them.
Question one is... what connects to the second port (which
I can find in my service manual), and two... can my truck be
damaged by using the wrong PCV?
Thanks!
Scott
Well, it's getting that time of the year again here in Nebr.
Fall's here with winter on it's way...
About this time every year I do a tune up on all of my cars,
just the basics - plugs, plug wires (if needed), cap & rotor,
filters, PCV, look over the belts and hoses, battery cables,
and adjust the engine as necessary.
Well, I usually replace the PCV if it needs it or not, but that's
what brings up my question.
The PCV that's on the truck now, has only one port on it, the
main one that goes back to manifold vacuum.
All the ones I find for my truck (86 F250 460/C6), have two
ports on them.
Question one is... what connects to the second port (which
I can find in my service manual), and two... can my truck be
damaged by using the wrong PCV?
Thanks!
Scott
Senior User
Joined: Sep 2004
Posts: 429
Likes: 4
Locknkey's post is correct. PCV valves often are equipped with two--or, in some cases, more--ports; even some from Motorcraft have two ports on them. Most aftermarket PCV valves are also supplied with a block-off cap to use on the "extra" port(s). It is important, of course, to make sure the cap is on the unused port snugly in order to avoid an awful vacuum leak.
