what is this part under my hood?

[2000XPLORERSPORT]

its the black knob/dial looking thing in the pic. its kinda right in the middle. i can turn it both ways freely and it never tightens up or loosens any.just spins. it has 2 hoses running off the bottom. my truck is a 2000 4.0l ohv.

 

[Turdle]

That is the egr vacuum regulator. The part you are turning is merely a vent cap.

 

[2000StreetRod]

EGR valve connected?

It looks like there is no vacuum line connected to your EGR valve. Your engine valves will last longer with a functional EGR system.

 

[2000XPLORERSPORT]

That is the egr vacuum regulator. The part you are turning is merely a vent cap.

oh ok. it dosen't matter turning it does it?

 

[2000XPLORERSPORT]

It looks like there is no vacuum line connected to your EGR valve. Your engine valves will last longer with a functional EGR system.

oh its there, i just took it off to move things over to get a pic.

 

[2000XPLORERSPORT]

oh ok. it dosen't matter turning it does it?

is there any such way to turn it? or just leave it be?

 

[2000StreetRod]

Vent cap position

The orientation of the vent cap on the EGR vacuum regulator should not matter.

 

[2000XPLORERSPORT]

The orientation of the vent cap on the EGR vacuum regulator should not matter.

ok, sounds good. like i said, it just turns both ways with out the cap going up or down. and it doesn't get tighter or looser.

 

[Joe Dirt]

It is just snapped on