Blue Smoke Screen while driving?

[cardiffgiant]

I picked up my 02 Boxster S in August last year and just brought it out of storage earlier this month (yay!). I haven't noticed burning oil at start up, but occasionally lay down an impressive blue smoke screen while driving. I've normally seen this when I've got it out on the highway, usually when I get it up to 4th gear.

My apologies if this is a topic with a lot of information available. I've searched, but most of what I can find about burning oil with these cars has to do with start up.

Does this sound like an AOS issue? Possible RMS? My driving style?

[seningen]

AOS.

while idling, remove oil cap and see if there is a good bit of suction.

I noticed especially bad on hard accelerating left hand turns.

M

[cardiffgiant]

Originally Posted by seningen

AOS.

while idling, remove oil cap and see if there is a good bit of suction.

I noticed especially bad on hard accelerating left hand turns.

M

Excellent, thanks! I also notice that it happens more on hard lefts.

[Skrapmot]

Sounds like oil if its blue. Porsche engine have a tendency to burn a little on startup, but revving it on the freeway it shouldn't. AOS would be a good thing to check first.
How many miles? Any loss of power? If not the AOS I would check compression to make sure you don't have a bad piston ring.

[Heiko]

Originally Posted by cardiffgiant

Excellent, thanks! I also notice that it happens more on hard lefts.

If it does it on hard lefts and during acceleration it is likely your oil extraction pump on the right side cylinder. The right side pump sits at the rear side of the head and directly above is the vent hole for the AOS... when you accelerate all the oil flows more to the back and when banking left is pushes it right into the corner of the head where the vent to the AOS is.... and if the pump cant move the oil back to the sump fast enough (either plugged or someone improperly installed it - seen that a few times now) then you will suck oil up the vent on the right side and overflow the AOS. Very rarely does this happen on the left bank as the pump sits in the front and the oil vent is also at the front (so when the oil flows to the back of the head during acceleration on the left bank it actually flows away from the vent hole and away from the pump...)
Having said that, check your pump... check your AOS and most of all make sure you clean your crossover hose and intake pipes out really good as the oil tends to sit in there for a long time... sometimes the little openings/passages for the oil extractor pumps gets plugged up and slows the flow for the pump.

Anyhow that would be were I would start after you check your AOS (while the engine idles try taking the oil cap off - if it comes of easy the AOS is likely not damaged as the diaphragm is still sealed... if it comes off hard (lots of vacuum) then you're AOS is probably pooched)... if it isn't the AOS check the pump...
(make sure the right side pump has numbers 1-2-3 facing the block... the left side pump on the front will have 4-5-6 on the block side)
H