Oil is pouring out..I need help finding the part

[dmonk]

No, I haven't tried removing the cap while idling. So if my AOS has failed, shouldn't I have a check engine light or something?

[JFP in PA]

Originally Posted by dmonk

No, I haven't tried removing the cap while idling. So if my AOS has failed, shouldn't I have a check engine light or something?

Not necessarily. The optimum method to test the condition of the AOS is to use a digital manometer attached to an old oil fill cap. Warmed up, the system should read 5 inches of water or less; if it reads higher, or you read pressure, it is toast.

[maytag]

Originally Posted by JFP in PA

Not necessarily. The optimum method to test the condition of the AOS is to use a digital manometer attached to an old oil fill cap. Warmed up, the system should read 5 inches of water or less; if it reads higher, or you read pressure, it is toast.

JFP, you've probably seen a bunch of these over the years, yeah? (I mean the cam plug popping out)
What's been the most common cause, in your experience?

If my opinion below was way off the mark, I won't be offended if you correct me, haha.


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[JFP in PA]

Originally Posted by maytag

JFP, you've probably seen a bunch of these over the years, yeah? (I mean the cam plug popping out)
What's been the most common cause, in your experience?

If my opinion below was way off the mark, I won't be offended if you correct me, haha.


Sent from my SM-G930T using Tapatalk

These pop out due to pressure problems, either from a build up of crankcase pressure due to the loss of vacuum from an AOS failure, or due to unusual oil movement caused by a blocked oil passage or having the cam end plug come out. In order of commonality, I would go with AOS failure first, oil passage blockage second, and the cam end plug last. Again, this is why you need the digital manometer, with the car idling and the plug installed, little or no vacuum in the crankcase, or pressure build up, would point to the AOS.

[Gilles]

Originally Posted by JFP in PA

Again, this is why you need the digital manometer, with the car idling and the plug installed, little or no vacuum in the crankcase, or pressure build up, would point to the AOS.

JFP,

Can the digital manometer I bought for the 987 Cayman be used on the 986 Boxter?

If I remembet correctly, for some reason I was not able to use it on someone's (cannot remember his name..) 986 when I help him to change the oil on his car

[JFP in PA]

Originally Posted by Gilles

JFP,

Can the digital manometer I bought for the 987 Cayman be used on the 986 Boxter?

If I remembet correctly, for some reason I was not able to use it on someone's (cannot remember his name..) 986 when I help him to change the oil on his car

Sure, you could use it on any car, you just need to make sure the oil fill cap is the same, or like we do, have multiple cap "adaptors" for different cars.

[Gilles]

Originally Posted by JFP in PA

Sure, you could use it on any car, you just need to make sure the oil fill cap is the same, or like we do, have multiple cap "adaptors" for different cars.

Thanks JFP it makes sense, I will buy a new oil cap for the 981 and make a new adapter.

Does the vacuum value (5" of water, or less) remains the same for the M97A1 engine as well? Thanks again!