Re: vacuum leak I think its the intake manifold runner
A clacking noise means the valves themselves have failed. Replace the IMRC and actuator if you want, but it won't fix anything. Unless you have a code for specifically the runner controls, the system is working fine. A clacking that goes away when you unplug the vacuum hose to said controls means that the bushings holding the valves in place have rotted away. The only fix for that is replacing the manifold or deleting the valves.
As for a vacuum leak back there, replace those two vacuum hoses on the IMRC. That's the likely cause.
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2003 Ford Ranger XLT
2.3L I4 Duratec DOHC, 5R44E 5-speed auto, RWD, 7.5" Open w/ 4.10 Ratio, Gibson split-rear catback
Sonic Blue Pearl with dark gray trim
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