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« Last post by Ludworks on December 16, 2024, 05:35:33 PM »
Hi Spectre, welcome to the forum.
So the vacuum system on an Eagle is best looked at in chunks. There's a separate system for EGR, Evap, 4wd, heater controls, etc. They overlap quite a bit, but tracing out the lines that are specific to whatever system you're trying to rebuild can help you ignore the clutter.
How familiar are you with the stuff you want to work on? I recommend you do some research on the general mechanisms of EGR and Evap before you try and tackle them. Understanding how a vapor canister is supposed to work is more important than exactly replicating what the factory did.
You'll need to have all of the various bits and pieces of each system before assembling. The EGR valve, the EGR CTO, and the EGR TVS will all need to be in hand and in good working order before you run any EGR lines. From there you can either try and replicate the factory location for each component or, for components that don't need to be directly bolted to the engine, locate a good location on the firewall or fender and temporarily attach them there. Next route vacuum lines from one component to the next following the diagram. It should quickly become obvious if you need to move any components. Once the lines are attached try running the engine and see how it responds. If all is well you can consider attaching things permanently.
Build each system out separately as much as possible. Vacuum tubing is cheap so buy a roll of whatever sizes you need and don't be afraid to cut and redo lines as necessary. As long as you don't lay anything on the exhaust manifold you'll probably be just fine. The factory routing is not always the best, so don't be afraid to deviate and switch things up.
Oh and be aware that the diagrams differ depending on year, state, etc. Probably best if you pick the simplest one and start there. I'd recommend starting with the Evap system. It's probably the easiest to get your head around and you really can't hurt too much. Make sure you get a correct fuel tank cap if yours has been changed out though.
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