Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Reply
 
LinkBack Thread Tools Display Modes
Old 04-22-2013, 10:38 AM   #1
Registered User
 
Join Date: Apr 2013
Location: Buffalo NY
Posts: 184
Blue Smoke Screen while driving?

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?
cardiffgiant is offline   Reply With Quote
Old 04-22-2013, 01:14 PM   #2
Registered User
 
seningen's Avatar
 
Join Date: Jul 2008
Location: austin
Posts: 730
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
__________________
Drivers: '08 Cayenne Turbo, 96 993 Çab/Tip (wife's) & '92 964 Cab
Race Cars: '75 911 RSR Clone & '99 Spec Boxster
mike@lonestarrpm.com
seningen is offline   Reply With Quote
Old 04-22-2013, 03:57 PM   #3
Registered User
 
Join Date: Apr 2013
Location: Buffalo NY
Posts: 184
Quote:
Originally Posted by seningen View Post
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.
cardiffgiant is offline   Reply With Quote
Old 04-22-2013, 04:55 PM   #4
Registered User
 
Skrapmot's Avatar
 
Join Date: Jul 2012
Location: Bay Area California
Posts: 415
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.

Last edited by Skrapmot; 04-22-2013 at 05:02 PM.
Skrapmot is offline   Reply With Quote
Old 04-22-2013, 05:46 PM   #5
Registered User
 
Heiko's Avatar
 
Join Date: Sep 2012
Location: Guelph, ON
Posts: 905
Garage
Quote:
Originally Posted by cardiffgiant View Post
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
__________________
_________________________________________
Previously owned:
2000 Boxster S 3.2 Ocean Blue / 1974 911 Targa Silver
Heiko is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 04:17 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page