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posted by
someone claiming to be Don Foster
on
Tue Nov 10 16:21 CST 1998 [ RELATED]
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Dave --
This is a puzzlement.
Three thoughts: - First, the O-ring may have gotten cut during installation (I've done that). Even a nick can let oil seep out.
- Second, the O-ring might have peeled up over the ridge in the pipe (I've done that, too).
- Lastly, it might not be the correct O-ring -- too thin, so not squeezing into the block (no, I haven't done that one yet -- at least not on a Volvo).
That tube is only a gravity-fed drain -- there's really no oil pressure there, so there's almost no driving force to push oil out. O-rings get there sealing properties from the "squeeze" against opposing surfaces. In this case, those surfaces are the tube and ID of the hole in the block. You shouldn't need to push it down solid to achieve a seal. Even so, you might get a few thousandths extra insertion, but I'd guess the manifold and turbo is already down all the way. After all, it weighs a lot, so would have sat low during installation.
Does your engine have very high crankcase pressure?
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