I need some help answering a quick question. After scouring Google and researching vacuum diagrams, I made the observation that my reed valve does NOT have a vacuum line going to it and it looks like it hasn't been there for years. (I just acquired this vehicle)
In this pic for the 3.0 motor, the yellow line represents the line I am talking about
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The yellow vac line on MY 4WD 3.0 motor does a 180 and goes to some check-valve in the passenger fender! Is that right? Why is my truck different than all of the diagrams? That reed valve is very important from the diagrams I have been researching.
Even after replacing all of the parts (listed below) I still have that EGR vacuum issue and it's definite. I believe this is what is causing my acceleration issues as well.
NOTE: the spark plugs had the tell-tale white powdering residue on them indicative of high-heat and/or vacuum leak problems.
I changed out the following parts in my hunt to fix this:
VSV Soleniod - OEM Toyota replacement - NEW
VSV Vacuum Switch Valve - OEM Toyota replacement - NEW
All new vacuum tubing - swapped one for one at a time
New NGK Spark Plugs
New NGK Spark Plug Wires
I need to know about this reed valve vacuum line issue in my truck. Is it supposed to be NOT USED in 4WD trucks? All diagrams say it needs to be used and I don't want to mess with the current setup until I get some feedback from the forum.
Thanks in advance!