I've seen so many posts about the Plenum Gasket going bad, and a Plenum leak, and loss of power and so on and so forth so now i'm curious, how do i check for a plenum leak? where do i look and how do i test it?

 

either pull your throttle body, or just look through it into the intake with a flashlight. pooled oil=plenum leak.

 

This is an old thread...

Pretty much you just pull your throttle body off your intake manifold and look around in the intake manifold with a flashlight to check for pools of oil. If you see very light amounts of oil, the plenum gasket is getting worn and is already practically at the end of it's life. If you find a large pool of oil somewhere in the intake like towards the firewall side of the engine bay, then the gasket is already gone and it should be repaired.

 

This thread looks like it was started today. What do you mean it's an old thread? Or that was from an old thread?

 

He probably ment the portion he contributed was from an old thread.

 

Does anyone have any photos of what a large pool is? Obviously half a gallon is a bad thing, but what about an ounce?

 

there are pictures on the site somewhere. Use the search feature, and select in the 2nd gen section. I bet they'd turn up.

 

You can also remove the PCV valve and breather (one on each valve cover) and cover he valve cover holes with your hands, engine running....If there's vacuum, gasket is done. When the gasket leaks it applies a vacuum to the crankcase, which is where the oil is getting in.

 

https://dodgeforum.com/m_249261/tm.htm There is all you'd ever want to know... and MORE! lol There is a pic of a blown plenum down a ways