C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Oil pooling on intake

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Old Sep 16, 2024 | 04:34 PM
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Default Oil pooling on intake

Hi all.
I have oil pooling on my intake where it bolts to the heads. I assume the oil is coming from the bolt holes. The valve covers appear to be dry. Time for new intake gaskets? 85 l98. Thx.



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Old Sep 16, 2024 | 04:36 PM
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Have you checked to see if the bolts have loosened up? I had the same issue years ago and they were loose
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Old Sep 16, 2024 | 04:51 PM
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Originally Posted by Incorvettei
Have you checked to see if the bolts have loosened up? I had the same issue years ago and they were loose
No, but am taking the plenum off because of a fuel leak. I will chk them then but may replace the gaskets as long as I'm in there.
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Old Sep 16, 2024 | 05:11 PM
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My Friend you have Officially Been Salted into the Wonderful world of Corvette Ownership That is an Intake Leak if you look Behind the Distributor you will probably also find a Wet China Wall. so since your already are Pulling the Plenum & Rail Keep Going and do the Intake. Its only a few more Bolts and a Coolant Dump away, and make sure to change Oil after Intake Job because Oil May Get a Splash of Coolant.

Last edited by s carter; Sep 16, 2024 at 06:40 PM.
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Old Sep 16, 2024 | 09:24 PM
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Originally Posted by s carter
My Friend you have Officially Been Salted into the Wonderful world of Corvette Ownership That is an Intake Leak if you look Behind the Distributor you will probably also find a Wet China Wall. so since your already are Pulling the Plenum & Rail Keep Going and do the Intake. Its only a few more Bolts and a Coolant Dump away, and make sure to change Oil after Intake Job because Oil May Get a Splash of Coolant.
Thx s Carter. I will take care of it.
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Old Sep 16, 2024 | 09:41 PM
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When you put the Intake in bolts back in seal the threads, I have done both ways you can use a Automotive Tephlon paste or wrap with Tephlon tape. I prefer the paste lube's the threads and slides better
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