Quick vacuum hose question… (1 Viewer)

[Trigger6]

Can any of you guru’s tell me where the other end of this small vacuum tubing connects. It’s the small piece coming out of the bottom of the upper intake manifold….. About ready to pull my hair out!

Thxs in advance!

 

[Wompom]

 

[IdahoDoug]

Yes. You have a wrong hose connected to where it's supposed to go. That long black hose is on the nipple where this goes. it's directly under the end of the hose you're asking about.

 

[Wompom]

This one might be easier to see

 

[Trigger6]

View attachment 3655677

Then mine must have been messed up to start as there was a long piece of vacuum tubing connecting to that port on the VSV with the other end connected to the top of EGR valve.. which then leads to the next question. Where does the other end of the EGR tubing connect?

 

[effjay80]

 

[Kernal]

The narrow pipe that dives through the intake to come out underneath can be bypassed ie: if it becomes blocked by corrosion for example, so the PO may have done something like that using a longer section of 3.5mm vacuum hose?? In that situation the other end of a long section of hose (opposite the EGR valve) would connect directly to the EGR VSV. See photo in Post #4, left side you see a short section of hose coming off the underside of the intake going to the EGR VSV.

 

[Trigger6]

The narrow pipe that dives through the intake to come out underneath can be bypassed ie: if it becomes blocked by corrosion for example, so the PO may have done something like that using a longer section of 3.5mm vacuum hose?? In that situation the other end of a long section of hose (opposite the EGR valve) would connect directly to the EGR VSV. See photo in Post #4, left side you see a short section of hose coming off the underside of the intake going to the EGR VSV.

That is a pretty good bet that the PO did just that…. But I completely cleaned all the ports in the manifold now while I had everything apart for the head gasket replacemen (the inside of the manifold was pretty gunked up). Hopefully I got everything back correctly now. Thxs again for everyone’s help!

 

[Kernal]

So you know, that small pipe dives through the intake, it does not open into the intake, so you need to check to see if you blow air into one end the air comes out the other.

 

[Trigger6]

So you know, that small pipe dives through the intake, it does not open into the intake, so you need to check to see if you blow air into one end the air comes out the other.

ah… so if its plugged, that is why it makes sense to just bypass and connect with longer tubing directly to the VSV. frankly, kind of a poor design by Mr Toyota to have that dive thru like that..

 

[effjay80]

Clean it out with a small long drill bit

 

[Trigger6]

Clean it out with a small long drill bit

stuck a small wire brush thru… it was open and clean