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malpaslane · Joined: 23 Mar 2008 Posts: 78 Location: wales, uk

Hi, I have asked this question in another post ,but i,ve had no answer, the car is 931 s2 stood for 4 years and has now been on the road for 1 year, in the last 2 weeks the car has had a strange noize coming from the turbo i think, it,s sounds like another deeper tone turbo starting up and the car is smoking more ,there,s a new oil leak started on the connection where the oil pipe fits to the bottom of the turbo with the beather pipe that goes back to the head in it, Here,s my question, if that pipe was blocked and the oil couldn,t return to the sump as well as it should , would it leave to much oil in the turbo causing the oil to pass the seals and cause more smoke and cause the leak, because it,s trying to getting out the seal at the bottom, also could it be to much oil in the turbo spining around making the noize and the last idea would it stop the oil cooler from getting hot after a 4-5 mile run, as it will only get hot if the car has been idling for some time. The car has no problems with oil pressure and i use 15-50 full syn mobile 1. beginning to tear my hair out now and i haven,t got alot left. many thanks Rik
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931 1982, PAIN IN THE ARSE,BUT GETTING THERE. 911 1976 2.7. 931 1981 S2(NON RUNNER) ALFA 156 SPORTSWAGON.

924guy · Posted: Mon Apr 06, 2009 11:17 pm Post subject:

i would think you would see some oil pressure fluctuation if you had a blocked passage, deep tone usually indicate a head gasket or other internal engine issue in my experience. i would do a leak down test first, and take it from there...

It certainly cant hurt to pull and clean out the oil feed lines, and replace the drain line from the oil accumulator to the block, as it is probably at least partially collapsed if it hasnt been replaced in the last decade or so..
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Eric
78 924
82 931 SE "smokey"
99' VehiCross
Y2K Honda Insight
http://www.cardomain.com/id/924Guy
Performance by Pasha

ic932 · Joined: 11 Feb 2005 Posts: 1104 Location: UK

malpaslane · Joined: 23 Mar 2008 Posts: 78 Location: wales, uk

Thanks both, it,s a strange problem , as both the smoke and noize seemed to start at the same time, it doesn,t make it any easier with my garage being full and i can,t get the car in there to have a good look at it, driving it yesterday i,ve noticed that the noize seems to start when the turbo comes in about 2-2500 revs and goes at about 3-3500 revs if i accelerate smoothley. If i accelerate hard the noize is alot louder,the engine sounds rougher and seems to be there longer, which makes me think there is a air leak somewhere, but i checked and replaced hoses and can,t find anything really wrong and any different from what it was like before it started. The only thing i have found is with the pipe that goes from fuel meter to turbo, i changed the first one because there was a small crack in it and i,ve since taken the new pipe off again and found crap in it, like you would find under your oil cap if your head gasket was gone, but there,s none on the cap and nothing in the water and wasn,t any in the old pipe i took off and the car runs fine apart from the noize and smoke......Thanks again Rik....
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931 1982, PAIN IN THE ARSE,BUT GETTING THERE. 911 1976 2.7. 931 1981 S2(NON RUNNER) ALFA 156 SPORTSWAGON.

malpaslane · Joined: 23 Mar 2008 Posts: 78 Location: wales, uk

I think i might have found the problem, i took the oil seperator off tonite and the pipes around it and they were all full of gunk, the seperator was full to the top, so i think the head gasket must be going, the funny thing is i have no other signs, no gunk on the oil cap,no oil in the water and no real running problems. Could this be it?
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931 1982, PAIN IN THE ARSE,BUT GETTING THERE. 911 1976 2.7. 931 1981 S2(NON RUNNER) ALFA 156 SPORTSWAGON.

924guy · Posted: Wed Apr 08, 2009 7:15 am Post subject:

malpaslane · Joined: 23 Mar 2008 Posts: 78 Location: wales, uk

the gunk was just like the creamy stuff you get under your oil cap if your your head gaskets gone, smells like exhaust fumes and there was alot of it, it was like a big bowl of dog sick. The car didn,t smoke half as much this morning coming to work, the noize is still there,but seems to be not as loud as before, but it is still there. Thanks Rik
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931 1982, PAIN IN THE ARSE,BUT GETTING THERE. 911 1976 2.7. 931 1981 S2(NON RUNNER) ALFA 156 SPORTSWAGON.