What is the blue line's name and where should be connected (to five)

Sonic

Member
Aug 2, 2021
42
15
18
Sweden
Hi all,

I'm trying to put back the upper intake but I got confused what i marked on the pic correct or not what is the correct way?
lower intake help.jpg
 
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Chythar

Recently finished repairing my rear
15 Year Member
Aug 26, 2004
2,354
135
113
West Los Angeles, CA
Yes, you've marked the diagram correctly. Not sure what the difference is between #4 and #5 in the right diagram, but the hose goes from the nipple under the intake to the white connector that's circled in the engine photo. The #1 in the PCV valve diagram is the same hose (#3) in the diagram on the right.
 
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manicmechanic007

5 Year Member
Sep 26, 2017
1,957
546
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Roy, Utah
Without a bigger picture it could be several things
It is possibly the HVAC vacuum supply line
Go easy on yourself and take a few pictures as you disassemble
You should easily see where it goes once you get the upper intake put back on
Do not get ahead of yourself
The VECI is your friend