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Random Vacuum ports hissing.

3K views 1 reply 2 participants last post by  VaiFanatic 
#1 ·
I noticed today on my 99 Durango 5.2L that on both sides of the engine there is a port that hisses ans sucks air. I dont know if there suposed to be hooked to something or just capped or left open.
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#2 ·
Both of those ports are capped on my '98 5.9.

The cap probably crumpled on one side, but the other side looks like it had a hose on it purposely to draw vacuum to something.

I know it's been a month since this was posted, but perhaps you're still seeking an answer.
 
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