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Not AOS Failure
Hi
I have a problem with my Boxster S, which seems to be beating many 'specialists'. Can anybody here throw some new ideas into the ring ?
Boxster S, 2000, 75K. Originally, I had the usual problem of sudden blue smoke from the exhaust when driving hard, and then lifting off. The AOS was replaced, but the problem persisted, but not so severe, producing sudden puffs of blue smoke when lifting off from high revs (4500+). It was suggested that there could be oil pockets still which would burn off. After over 1000 miles, the problem persists as bad as ever. By blocking off the AOS to the throttle body, though, the problem goes away. As a long shot, perhaps the replacement AOS was faulty, so it's been replaced again. No joy. Compression has been checked and is OK, but all 6 spark plugs show some oil covering. Oil level is OK. AOS drain is OK. The sump was taken off, but nothing untoward could be seen. Nothing showing on the diagnostics. Pretty well everything external that could be checked has been. I'm now being told that further investigation requires engine out and strip for a 'fishing' trip with no guarantee of success. That almost makes it a write-off at today's prices.
I would really appreciate some other ideas / suggestions / tests we could work on.
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