 Inside my air cleaner lid, Does anyone know what this is? |
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| nivekdodge |
 Sep 8 2025, 11:15 AM
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#1
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Member  Group: Members Posts: 321 Joined: 28-August 21 From: Pittsburgh Pa Member No.: 25,860 Region Association: MidAtlantic Region 
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Hi
This is the bottom of my air cleaner lid. Anyone else get this and where’s it from? Do I need to fix it? Kevin Attached thumbnail(s) 
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| PlaysWithCars |
Sep 14 2025, 06:41 PM
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#2
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Senior Member Group: Members Posts: 537 Joined: 9-November 03 From: Southeast of Seattle Member No.: 1,323 Region Association: Pacific Northwest
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Could it be reversion back through the carburetors? (small pressure waves coming back up the intake tract from exhaust pressure during overlap and/or rapid valve closure). More likely to occur on motors with an aggressive cam shaft and driving conditions where the throttle plate is open at relatively low engine speed.
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Posts in this topic
nivekdodge Inside my air cleaner lid Sep 8 2025, 11:15 AM
dr914@autoatlanta.com condensation blow by from not running the car to o... Sep 8 2025, 11:22 AM nivekdodge Thank's George
I'm sorry, it's not p... Sep 8 2025, 11:54 AM porschetub
Hi
This is the bottom of my air cleaner lid.... Sep 8 2025, 02:08 PM nivekdodge They’re chrome but no burn marks Sep 8 2025, 02:51 PM mlindner Do you have some backfiring go on. I get a little ... Sep 8 2025, 03:06 PM nivekdodge It doesn’t take that long. This is two afternoon... Sep 8 2025, 04:31 PM Puebloswatcop Have you adjusted the valves lately? I would chec... Sep 9 2025, 07:33 AM infraredcalvin This looks like it’s been on fire… I agree wit... Sep 9 2025, 08:05 AM nivekdodge No just a shadow
Kevin Sep 9 2025, 02:32 PM
nivekdodge
Could it be reversion back through the carburetor... Sep 14 2025, 07:15 PM fixer34 Did you say it is 'oil and bronze', as in ... Sep 14 2025, 08:48 PM |
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