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Registered
Join Date: May 2003
Location: Boise
Posts: 141
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White smoke, then cloud, then smoke in exhaust
Hello,
I changed the oil tube from the engine to the oil dip stick tank on my 1980 911. Oil of course went away. But I misjudged the amount of lost oil and ended up overfilling the tank when I put oil back in... In addition, the car had been sitting there for around 6 month (winter, bad weather...)... After pooring oil, I took it for a short spin, around 3km... Upon my return, it stalled and I discovered that they was a LOT of white smoke comming out of the exhaust pipe (a truck sized cloud maybe)... The car would not hold in Idle and stall.... I removed around 2.5l of oil, and restarted it... Oil now at a good level. The smoke situation rapidly improved, with white "cloudlets" comming out... And the car would happily idle. I let it idle for around 20mn and the smoke turned to white wisps... But the car never made it to 180° (operating temperature)... Rain comming down again, I was not able to continue the experience and take it back out for another spin... Any idea what is happening and what I should do? Thanks for all your advices, Cyrille |
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03-12-2023, 09:21 AM
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Its not a big deal. When the tank is overfull the engine will pull the oil in through that tube. Make it half on the stick at idle warm and itll be ok
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82 SC , 72 914 |
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03-12-2023, 10:21 AM
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The tank overfill situation will burn off eventually, good long drive does the trick as Porschedude930 said.
Might be a bit difficult to determine when all the remaining oil is gone from the cylinders on startup due to general moisture burning off on say a cold weather morning. Common also is as a (high mileage) engine sits for months, some oil could seep into cylinders just from normal wear on the valve guides. This also burns off after 5-10 minutes. |
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03-12-2023, 11:04 AM
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Join Date: Jun 2016
Posts: 355
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+1 porsche930dude
I've learned to keep my oil level in the middle; between the full and low marks. Even keeping my '78 SC at "full" would occasionally generate enough smoke to knock down all the mosquitoes for a 1/4 mile. When she's in the middle, no clouds. Michael J '78 SC |
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03-12-2023, 12:08 PM
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Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,431
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Most of it is in the exhaust system and may take an hour or so to burn off. I usually recommend a midnight drive.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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03-12-2023, 09:14 PM
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PCA Member since 1988
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Quote:
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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03-13-2023, 07:28 PM
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Porsche
1972 porsche 914
