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Rough idle, misfire, hissing noise, vacuum leak

Tiny
BRYTONDANIEL
  • MEMBER
  • 2008 DODGE CHARGER
  • 3.5L
  • V6
  • AUTOMATIC
  • 140,000 MILES
When I start my car it goes into a rough idle that shakes the entire car, as I am driving I can feel misfires and a hissing noise. I have been told that I may have a vacuum leak or that I need to replace the entire intake.
Monday, July 3rd, 2017 AT 5:00 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Very much sounds like a vacuum leak. There are a few ways to check, with the engine idling, spray some brake clean around the manifold, if the revs pick up you have a vacuum leak, or you can use a smoke machine, this will pinpoint the exact point of the leak as you will see the smoke coming from the leak it self.
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Tuesday, July 4th, 2017 AT 3:25 AM

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