Overheat question

So I am still working on this issue and need some help. Despite the fact that I have people asking me for help on things, I am a relative engine rookie.

I am still tracing a coolant leak on the minnow. I took as many parts off the engine as I could while still being able to start it. By passed the radiator, started her up and looked for where the leak was coming from.

It is coming from under the intake plenum, in the middle, behind the center timing belt pulley.

Here-



Can someone help me with identifying these parts and give suggestions?
 
Nailed it down to the no. 2 idler. So that's getting replaced. I broke the cold start injector removing the plenum, so that's getting replaced. I plan on replacing as many top end gaskets as I can while I have it all apart, any suggestions?

I might eliminate the EGR. Any thoughts on that?

Also have a ton of cracked vac lines to replace, so any suggestions on other crap that can be eliminated?
 
I plan on doing the valve cover gaskets soon, so I'm starting a list of things to do while I'm in there. Here's what I can remember off the top of my head:
Pull fuel injectors to clean them and install new seals
Check knock sensor and all other visible wires. Some folks would probably replace the knock sensor wire and the temp sensor.
There's a hard coolant line that runs along the top end of motor. I'll take a good look at that for corrosion.
If I was really smart, I'd do the timing belt/water pump/ pulley kit since since the coolant is going to be drained anyway.
There is an oil leak around my distributor, so that will get a new o-ring.
The PO has already changed the PCV valve, but you might add that to your list
Vacuum lines, like you mentioned.

I'm sure there are a few more things to consider.
 

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