Ontario CA Need help

[fernanadogutrz84]

Is there anyone here in Ontario with an na motor need some help making sure were some water hose goe.. Yesterday i went to see if the car was ready the previous owner was suppose to change the injectors so i get there the plenum is back on but there is one water hose that they put on that it doesn't look right its my first time to put my hands on this engine i ask the guy and he said that he was sure thats the way it was is a hose Behind the manifold in a u shape its like a 1/2" diameter i really dont think that the way they have it is right im afraid they dont know how they were conected I've been trying to look for pics but the pics i found are with out the hose u can only see the pipes and to me it doesn make sense how the have it..
If theres anyone around the area please help

[Z-owned]

U-shape on the passenger side right on the backside of the plenum?

Edit: watch this vid at the the 25 sec mark if that's what you see it's normal and they deleted/bypassed the water lines under the plenum.
http://m.youtube.com/watch?v=_WnTkPpQ6aw

[fernanadogutrz84]

Yea thats exactly how they have it... know my question is why would Nissan put so many hoses there if they weren't needed whats there purpose? Thaks for the help i was really worried...

[Z-owned]

Nissan over engineered the car. They had a bunch of hard water lines under the plenum that were suppose to help keep the throttle bodies from potentially freezing in extreme cold.

[fernanadogutrz84]

Thank you much.. i just saw two pipes coming
out from the center of the firewall wit no hoses is this part of the deletion or is this something else?

[Z-owned]

If they are passenger side one smaller than the other it sounds like a/c was deleted, the water hard lines from the firewall are center.

[DCaff300ZX]

If the two outlets in the firewall middle have no hoses to them, then is seems that the heater core is not hooked up and the owner bypassed it back to the block...probably means the heater core is leaking, as I did this myself temporarily until I fixed mine in my NA years ago.
The AC hardlines lines on the passenger side firewall are only about 1/4 inch or less in diameter and pressurized (refrigerant) and with no hoses, the coolant hardlines are about 5/8 inch or more in diameter and angle down slightly along the firewall and towards the passenger side.

[fernanadogutrz84]

The car is ready thanks alot for the help so its the heater core pipes that are disconnected and the owner said that when they replace the engine 2 years ago it was leaking he just never fix it.. The car is ready and ill be picking it up on Tuesday cnt wait to drive it...