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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

Old 12-30-2008, 01:59 AM
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Not good.
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Old 12-30-2008, 02:08 AM
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How long has it been sitting before you started it?
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Old 12-30-2008, 02:58 AM
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Quote:
Originally Posted by TVRLOTUSTR3 View Post
How long has it been sitting before you started it?
about a year. the guy that I bought it from said he put new chains and gears in then let it sit.
Old 12-30-2008, 03:49 AM
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the car has 81000 miles on it
Old 12-30-2008, 03:49 AM
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Quote:
Originally Posted by TVRLOTUSTR3 View Post
How long has it been sitting before you started it?
Key question. You said a year. What you need to do is take it out (at night) and drive it for a good while. From sitting so long you have oil that has seeped into places that will only get clear after you burn it off. This is fairly common for a lot of the early cars. Make sure you check the oil level with the car running after it is well into the running temp zone to make sure it isn't overfilled. Half way between min and max when hot is perfect.
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Old 12-30-2008, 04:21 AM
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+1 to what Tony G. said.
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Old 12-30-2008, 05:34 AM
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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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Old 12-30-2008, 06:58 AM
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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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Old 12-30-2008, 07:25 AM
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Did you overfill the oil?

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Old 12-30-2008, 07:57 AM
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While on your night ride pay attention to the oil temp also.
Old 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.
Old 12-30-2008, 11:24 AM
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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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Old 12-30-2008, 11:35 AM
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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.
Old 12-30-2008, 11:45 AM
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the oil pressure was at 60 at idle temp never got over 150. The oil pressure is 140 when driving.
Old 12-30-2008, 11:45 AM
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This is getting better, what rpm's did it show at idle?
Old 12-30-2008, 11:49 AM
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Old 12-30-2008, 11:51 AM
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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.
Old 12-30-2008, 11:55 AM
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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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Old 12-30-2008, 12:39 PM
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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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Old 12-30-2008, 12:53 PM
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