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Recommended Posts

Posted

At 52k miles, there is some oil seepage from my 1999 Boxster's engine. As detailed elsewhere, I have tightened valvecover and crankcase bolts to spec.

(Main culprit is lower Air/Oil separator line)

When I inspected the engine, there was no evidence of oil leaking from the plugs.

Is it safe to assume that the oil protection tubes and O-rings are intact without removing the coils and plugs?

Posted

Thanks - I had read and bookmarked both. There isn't a description of how to determine whether or not a tube is leaking.

My assumption is that it would be very obvious and would not require removing the coils.

The areas below each of the plugs is dry so, I have no leaks.

Now for the air/oil separator....

  • 2 weeks later...
Posted

There are two o-rings, one on either end of the tube that can leak into the tube and around the coil pack. I've seen them leak internally without any extrernal suggestion of leakage. If you dont have any misfires or anything and visually there is no oil leaking from around the coilpack areas then its relatively safe to assume they are good.

Posted
  If you dont have any misfires or anything and visually there is no oil leaking from around the coilpack areas then its relatively safe to assume they are good.

Thanks that was my assumption but, you know how assumptions are!

- I'm going to change the plugs this week - I guess I'll know for sure then!

I had lots of leakage on the rear passenger side of the engine from the Air Oil Separator bellows tube but, none now that the AOS is history.

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