Toyota 4A F vacuum lines help

21 Aug 2017

Good day CTzens, when I inspected our corolla’s engine, there were tubes and other lines that was either tied or led no nowhere. I had searched for a diagram but I am having trouble in understanding some parts of it. Take note the car runs fine and idles good even though the tubes are tied or not connected to something, just curious about these dangling lines. Pictures of tubes shown below.

This tube attached to the valve cover and the other end is dumped on the ground

This tube in the rusty air filter

This tube from the engine head

This tube near the fuel filter(?)

This tube near the carb, It is also near the part on the top image

Any comments or suggestions would greatly help. :)

Comments

1: this looks like a PCV (Positive Crankshaft Ventilation) hose. It’s an emissions hose.
2: not sure
3: looks big enough to be coolant-related
4: not sure
5: not sure
Check the diagram below to see if it helps

Thank you sir, I had used a similar diagram but there are things that are no longer in the engine like some I assume metal tubes around the carb and the TVSV in the intake manifold.

I’m surprises that the car still runs fine despite the lack of these tubes haha