986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - replaced aos still smoking, please help :-)

barks · 06-09-2015, 01:06 PM

thanks both,
ok, its done 120k miles with full porsche service history, last service was 1000 miles ago.

update,
so it drove home great yesterday with intake capped off, aos pipe open.

drove to work today its a 25 mile trip, drove great as i said im testing it to try and figure out whats going on, after around 20 mile i let it have it, it felt ok then a small amount of smoke, i thought it was residue as i was hitting it hard, backed off anyhow just in case, got to work and oil started dripping from engine...
the top was covered in the direction the aos pipe was pointing, anoying and a messy clean up but progress, its either not being sucked out by intake vacume and being pushed out or coming from somewhere else? which i doubt..

its lost about 1 litre of oil, however the digital display reads full but the dipstick reads empty!! yes trust the dipstick, but maybe someone put the wroing one in at some point?

so ive left intake capped off, and secured a pipe to the aos going to a plastic 2 litre bottle sealed at top but with holes around top section to breath, any oil will collect and i will know for sure its being pushed out.

anyone know the exact dipstick lenght, 02 plate 2.7l ?
is it possible engine removed at some point and the dipstick tube was cut then joined but now is longer?

so what could cause the oil to be pushed out past the aos?
is it possible the exhaust could be entering the crank case?
surely if it was it would just vent?
anyone got a link to the exact workings off the engine inc all aos pipes and pcv?

i also disconnected the pipe coming from the pcv and it wasnt that causing the slight smoking/ breathing.

its as if there is oil held in reserve somewhere and all of a sudden when the engine is hit hard it releases it pusing it upp the aos?

cheers
barks

06-09-2015, 01:06 PM	#6
barks Registered User Join Date: Jun 2015 Location: northampton Posts: 31	thanks both, ok, its done 120k miles with full porsche service history, last service was 1000 miles ago. update, so it drove home great yesterday with intake capped off, aos pipe open. drove to work today its a 25 mile trip, drove great as i said im testing it to try and figure out whats going on, after around 20 mile i let it have it, it felt ok then a small amount of smoke, i thought it was residue as i was hitting it hard, backed off anyhow just in case, got to work and oil started dripping from engine... the top was covered in the direction the aos pipe was pointing, anoying and a messy clean up but progress, its either not being sucked out by intake vacume and being pushed out or coming from somewhere else? which i doubt.. its lost about 1 litre of oil, however the digital display reads full but the dipstick reads empty!! yes trust the dipstick, but maybe someone put the wroing one in at some point? so ive left intake capped off, and secured a pipe to the aos going to a plastic 2 litre bottle sealed at top but with holes around top section to breath, any oil will collect and i will know for sure its being pushed out. anyone know the exact dipstick lenght, 02 plate 2.7l ? is it possible engine removed at some point and the dipstick tube was cut then joined but now is longer? so what could cause the oil to be pushed out past the aos? is it possible the exhaust could be entering the crank case? surely if it was it would just vent? anyone got a link to the exact workings off the engine inc all aos pipes and pcv? i also disconnected the pipe coming from the pcv and it wasnt that causing the slight smoking/ breathing. its as if there is oil held in reserve somewhere and all of a sudden when the engine is hit hard it releases it pusing it upp the aos? cheers barks