Hello,
Unless there are specific issues like sludge build up or debris inside, there is no need to clean out. But as with most engines you could see some gunk build-up inside. If so clean it with a rag.
You could use spray cleaners, just be careful not to get in any rubber components.
Here is a helpful guide that goes over the best practices:
https://www.2carpros.com/articles/replace-valve-cover-gasket
As for the ticking lifters, it is unlikely you will see loose bolts, as if they are loose, they will likely come off and create damage. Most of the time the ticking noise is due to bad lifters and that will need to be replaced to fix the issue.
What engine does the Dakota have?
I have attached the replacement procedure for the 3.9L V6 below. It has the torque specs for your reference.
And yes, you can re-use the bolts for the valve cover (unless there is an issue with one).
If you have a different engine just let me know and I will upload the info for that engine.
Let me know if you have any questions.
Thank you.
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Monday, March 21st, 2022 AT 8:11 PM