Vacuum lines running under intake manifold from charcoal filter

[shhh i know]

Okay so I'm removing my vacuum lines (I know this topic has been beat to death but haven't got a clear answer from other posts) and need to know about the two lines coming off of egr valve. They 'T' into two lines that connect to nipples under the intake manifold (there is actually 4 nipples under there but only 2 are being used as is). When I remove the lines from these nipples do those nipples need to be capped off?

 

[athlete3344]

http://www.dsmtuners.com/forums/art...-speed-shop-vacuum-diagram-removal-1g-2g.html

That should help you out. Looks like you just cap them on a 1g. Dont forget the block off plate.

 

[shhh i know]

Okay well looking at the diagram I shows where the plugs go. So it doesn't show plugs for the nipples under the intake manifold from the EGR or from the evaporation emission purge solenoid. So I guess I can just remove the lines and not have to worry about plugging them off.

 

[athlete3344]

Maybe Im misunderstanding but when I look at the first picture of three for the 1g I see the following:

From the EGR, line Y to a tee, and line G to a tee. From the tee, one end goes to the Thermal Vacuum Valve, and the other end goes to the intake manifold/throttle body.

From the Evaporation Emission Purge Solenoid, lines B and R make their way to the intake manifold/throttle body, and all the pieces in between may be removed. The EEPS may be kept or discarded depending on user setup.

Are these the two nipples you are talking about?

The two nipples under the intake manifold are lines B and B, one going to the BOV and the other going to the Fuel Pressure Solenoid.


EDIT:

And I just looked again, and if you look closely, one of the nipples is capped, and the other is kept and feeds to the FPR/EEPS depending on your setup.

 

[shhh i know]

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These are the nipples I am talking about.


I guess they didn't come from the EGR I must have got confused. But I still need to know if I need to cap off these nipples (from the picture I would think not). Also I would think I wouldn't have to cap off the ones running from Emissions Purge Solenoid either. Correct?

 

[athlete3344]

Ok, from the diagram it looks like the left line connected goes to the purge control valve. The right line looks like it goes to a tee, to the EGR and thermal vacuum valve.

Why the other 2 are missing I dont know, but all 4 should be plugged/capped off.

 

[shhh i know]

I was thinking that the 4 it shows plugged are the ones on the top of the intake (A1, A2, E, & P).
The after picture complete omits the nipples located under the intake manifold.

 

[athlete3344]

Those might be the lines that run across the manifold to the evaporative emission purge solenoid. Do they go directly into the manifold or do they run parallel under the manifold?

If it isnt those, then I dont know. Maybe someone else can chime in.

 

[shhh i know]

I believe they run parallel under it. Its hard to see under there.

 

[athlete3344]

If they do run parallel, then they can be removed. If you look at the 1st 1g pic and the 2nd - youll see the two solid lines going to the evaporative emissions purge solenoid in the first picture, and in the 2nd its been removed.

If you cant remove it, dont worry about capping it.

Try to follow the line with your hand or something if you can reach it, or look from the other side where the EEPS is and see if you can get a visual on a similar connection.

 

[serviceguy]

If you are removing your emissions (evaporative canister, EGR) the two lines under the intake manifold can both be removed along with the evaporative purge solenoid they are connected to.

Once you remove the solenoid, the canister and purge valve as well as the lines, you need to cap the two nipples on the throttle body they are connected to and than you can also remove the bracket from under the intake manifold.

The other two nipples are connected to the EGR valve so if you remove that one as well and cap the throttle body nipples (after installing a block off plate on the EGR valve) you should be fine. That is what the taboo diagram shows anyway.

The emissions diagram changes a little between a 1Ga and a 1Gb but only when it comes to the connection to the evaporative canister and purge valve connections. Then there's obviously the California version where the EGR is controlled by the ECU through a solenoid instead that using the temperature switch on the thermostat housing but that shouldn't be your case.

 

[Lofty]

No, those lines under the IM do not need to be plugged, you can actually pull all of those and remove the bracket under the IM.


Follow the lines and plug only the ports on the TB. Everything else does not need a plug.

An EGR block off plate will do as well.

 

[Bud92gsx]

Right Scott,But up on the firewall you do need to cap off a solenoid next to the one for the fpr.

Its pretty simple once you start yanking stuff out.

 

[shhh i know]

Thanks for all the help. I just did't want have to go back in and cap those others later.

After removing my charcoal filter I just tapped a longer line onto the fuel vapor line that was going into it and ran it under my car. Do I need to put any kind of end on it or can I just leave it open ended?

 

[Bud92gsx]

Thanks for all the help. I just did't want have to go back in and cap those others later.

After removing my charcoal filter I just tapped a longer line onto the fuel vapor line that was going into it and ran it under my car. Do I need to put any kind of end on it or can I just leave it open ended?

If I understand correctly.That sounds like what I did as well so you should be good to go.