XJ6 & XJ12 Series I, II & III 1968-1992

Leaking engine oil out of nipple under intake (pic inside)

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Old Jan 14, 2024 | 07:54 PM
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Default Leaking engine oil out of nipple under intake (pic inside)

Hey forum, so was under the car (1984 xj6 III) for an oil change and noticed I was leaking oil from what looks to be a vacuum nipple under the intake manifold. I recently cleaned out the screen for the pcv valve and don’t think the car burns much oil. Is this normal? What is the purpose of that nipple! Do I need to cap it to stop the vacuum leak there?

thanks in advance

 
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Old Jan 14, 2024 | 08:32 PM
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Originally Posted by XJ_noob
Hey forum, so was under the car (1984 xj6 III) for an oil change and noticed I was leaking oil from what looks to be a vacuum nipple under the intake manifold. I recently cleaned out the screen for the pcv valve and don’t think the car burns much oil. Is this normal? What is the purpose of that nipple! Do I need to cap it to stop the vacuum leak there?

thanks in advance

I think your drain cap is missing (Red Circle).. any Automotive Store should have.
Rgds
David
 
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Old Jan 14, 2024 | 11:48 PM
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Thank you for the help,
 
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Old Jan 15, 2024 | 09:36 AM
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ANY vacuum leak will make your engine run rough. No matter how slight.

Bill
 
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