Clunking noises after installing a new manifold

Tiny
JBRANC30
  • MEMBER
  • 2009 MERCURY MARQUIS
  • 228,000 MILES
We just put a whole new manifold intake on and now when I try to start the car it makes clunking noises and cuts off.
Sunday, June 5th, 2022 AT 10:58 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,536 POSTS
It sounds like you got something down inside one of the intake runners inside the head like a bolt or something, I would remove the spark plugs to see which one is damaged to confirm the problem. Sorry, I can tell for sure if you upload a video of the noise here with your response.
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Monday, June 6th, 2022 AT 8:41 AM

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