oil leak

2003 DODGE DURANGO
100,000 MILES • 4.7L • V8 • 2WD • AUTOMATIC
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JKINARD
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I recently changed the head gaskets and timing chain. After putting everything back together, I cranked it up and it ran just fine. However, oil began to leak from the engine like a waterfall! I looked underneath the vehicle and it seemed to be coming from the rear top of the engine, but I could not see from exactly where. I went to the top of the engine and put my hand around the back of the engine to try to feel where the leak might be. I felt that the oil was "puddling" under the intake manifold between the heads. Did I miss a step in the re-assembly, did not tighten something at the right torque or has something gone bad like a seal? Why would oil puddle under the intake manifold? Would it leak somewhere from one of the heads... if it was cracked?
Jan 4, 2022 at 9:52 AM
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SQM
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Hello,

It is possible something did not get aligned or you might have a bad gasket.
It can also leak due to not having the old gasket residue completely cleaned.
Did you have overheating issues before the head gasket replacement?
As if the engine overheated it is possible to have wrapped component due to excessive heat.

I have attached the head gasket replacement procedure including the torque specifications and torque sequence below for your reference.

Please let me know if you have any questions.
Thank you.

https://www.2carpros.com/articles/engine-is-leaking-oil
Jan 4, 2022 at 12:30 PM
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JKINARD
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Okay, forgive me for the time it took to respond, but I haven't had time to get back to work on my vehicle until now. So, I finally took off the intake manifold off the vehicle and saw where there was oil puddled on top of the engine (under the intake manifold). Where could that have possibly come from and why?
And thank you for your response by the way.
Mar 31, 2023 at 7:18 PM
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STRAILER
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It must be a bad gasket on either the intake or valve covers. Can you upload images of the parts/leak in question so we can see what's going on?
Apr 3, 2023 at 11:41 AM