Rough idle, misfire, hissing noise, vacuum leak

2008 DODGE CHARGER
140,000 MILES • 3.5L • V6 • AUTOMATIC
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BRYTONDANIEL
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  • 1 POST
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.
Jul 3, 2017 at 5:00 PM
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MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
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.
Jul 4, 2017 at 3:25 AM
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