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Location: Fayetteville AR
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Oil Coming from Exhaust please help!
With lots of smoke! No noise at all...any ideas? 76 911S 2.7 CIS
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12-30-2008, 01:59 AM
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The Puff.
Join Date: Sep 2007
Location: U.S. Navy
Posts: 1,290
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 Not good.
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'70 CT1B '11 GTS 300 Super |
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12-30-2008, 02:08 AM
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How long has it been sitting before you started it?
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Lotus 23 Lotus 7 TVR Vixen TR3 914-6 Clone 914-4 X-Runner |
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12-30-2008, 02:58 AM
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Quote:
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12-30-2008, 03:49 AM
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Registered
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the car has 81000 miles on it
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12-30-2008, 03:49 AM
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Registered
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Location: Pittsford, NY
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Quote:
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Tony G 2000 Boxster S |
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12-30-2008, 04:21 AM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
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+1 to what Tony G. said.
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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12-30-2008, 05:34 AM
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Diss Member
Join Date: Jul 2002
Location: SC - (Aiken in the 'other' SC)
Posts: 5,020
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It is possible that "something really bad has happened" but I would think the most likely culprit is oil seeping past the rings after a very overlong rest. If the car was sitting at an angle to either side a sizable bunch of oil could seep into the combustion chamber. If the exhaust valve was open then even more could be in the exhaust system.
If it doesn't burn out fairly quickly the first active step I would take would be to pop off the exhaust and see about washing it out. +1 on the driving it at night and +2 on driving on back roads where the people don't know "who that idiot with the James Bond smoke machine" is.
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- "Speed kills! How fast do you want to go?" - anon. - "If More is better then Too Much is just right!!!" - Mad Mac Durgeloh -- Wayne - 87 Carrera coupe -> The pooch. |
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12-30-2008, 06:58 AM
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Senior Member
Join Date: Feb 2000
Location: Lacey, WA. USA
Posts: 25,310
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I would think it more likely that the oil escaped past a valve guide or two, but rings could also be the culprit. If this were my car, I would not be terribly concerned. I would be suspicious of worn valve guides, but I would not be imagining some catastrophic engine failure fantasy. A car hiccups and we immediately suspect a broken crankshaft. In reality, the real causes of car problems are usually very simple. And finally.....these cars are known to blow blue (oil) smoke upon startup. Even when they simply sat overnight. Relax.
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Man of Carbon Fiber (stronger than steel) Mocha 1978 911SC. "Coco" |
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12-30-2008, 07:25 AM
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Now in 993 land ...
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Did you overfill the oil?
George |
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12-30-2008, 07:57 AM
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Location: Back in B'ham, AL
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While on your night ride pay attention to the oil temp also.
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12-30-2008, 10:17 AM
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Thanks to all the replies...So here is an update. I have a place that I keep my cars in an industrail park and I have a huge parking lot for my building. So I figured I would go ahead and get her out and see if it would clear up.. So after idling for about an hour and driving it 10 miles in my parking lot the SMOKE IS GONE!!! I have had 911's that have set before and they smoked really bad when I had gotten them running, but this on just smoked so much! It also was blowing all kinds of oil out of the exhaust pipe. But all is good now! Thanks Again.
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12-30-2008, 11:24 AM
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Max Sluiter
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You idled it for an HOUR!
 Wow, engines experience more wear at idle due to the lower oil pressure (when warm). Hope everything is OK in there.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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12-30-2008, 11:35 AM
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Join Date: Jul 2003
Location: Back in B'ham, AL
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If the engine survived an hour idle, and after it a 10' run, there is nothing wrong with it... I don't believe mine would.
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12-30-2008, 11:45 AM
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Location: Fayetteville AR
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the oil pressure was at 60 at idle temp never got over 150. The oil pressure is 140 when driving.
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12-30-2008, 11:45 AM
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This is getting better, what rpm's did it show at idle?
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12-30-2008, 11:49 AM
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900
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12-30-2008, 11:51 AM
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Registered
Join Date: Jul 2003
Location: Back in B'ham, AL
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Right on the money.
Enjoy your car, but IMO don't let it idle that long anymore... it is recommended to crank it and go. |
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12-30-2008, 11:55 AM
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Max Sluiter
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Wow, how did you get your oil pressure that high?
My oil pressure is 20psi at 2000RPM warm. Above that, it is almost 1 bar per 1000RPM. I get worried when I see the 60-100 psi cold oil presure and try to keep it not over 3000RPM 140 psi warm would freak me out unless the engine were spinning 10,000 RPM and then there would be much more to worry about.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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12-30-2008, 12:39 PM
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Location: Pittsford, NY
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Good job 911guy. If you do not know what oil you've got in the engine and when the filter was last changed, I'd be inclined to dump it and start fresh with some Brad Penn or similar oil.
Glad it worked out.
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Tony G 2000 Boxster S |
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12-30-2008, 12:53 PM
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1971 Porsche 911S
