Clunking noises after installing a new manifold

2009 MERCURY MARQUIS
228,000 MILES
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JBRANC30
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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.
Jun 5, 2022 at 10:58 AM
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STRAILER
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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.
Jun 6, 2022 at 8:41 AM