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Ticking AFTER exhaust manifold replacement

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Old 04-16-2020, 01:03 PM
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Default Ticking AFTER exhaust manifold replacement. EDIT: Piston slap???
My '91 had the common exhaust manifold cracks, as I verified after removal. I installed a new one and the loud exhaust leaks went away. But it still has some ticking that I cannot locate with a stethoscope. Any ideas?

Is this piston slap?

Video of noise:
Last edited by cletus141; 04-17-2020 at 01:20 PM. Reason: new info
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Old 04-17-2020, 01:19 PM
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Is this piston slap? Does it need to be fixed if so? I thought I read somewhere that the 4.0 is notorious for it.
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Old 04-17-2020, 01:27 PM
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IMO it doesn't sound like piston slap. Was it there before you replaced the exhaust manifold? Does it change with RPM?
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Old 04-17-2020, 01:32 PM
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Does it sound the same when its warmed up?
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Old 04-17-2020, 03:19 PM
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Yes it does. Collapsed lifter maybe?
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Old 04-17-2020, 03:19 PM
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Originally Posted by Spencer_P
IMO it doesn't sound like piston slap. Was it there before you replaced the exhaust manifold? Does it change with RPM?
Yes, but it was masked by an exhaust leak. It does change with RPM
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Old 04-18-2020, 08:08 AM
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Sounds to me like a normal 4.0 lifter clatter.
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