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Join Date: Nov 2014
Location: South Lake Tahoe, NV
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77' 930 oil puke up

I just got the 930 to start on the first try after a 20 year storage. Thank you all for the help on that.
Now for the bad news... after less than a minute of running, the oil started to puke through the breather line that goes to the air cleaner. I did not have the air cleaner on the car just the hose to the oil tank. Oil just rapidly poured out of the line. I am at a loss as to why. Any help in trouble shooting this would be greatly appreciated.
Note: I did drain the old oil but did not do any purging of the system. Could the oil thermostat to the cooler have been the problem?

Old 11-13-2014, 04:00 PM
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How much Oil did you add back in?
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Old 11-13-2014, 05:02 PM
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12 qts
Old 11-13-2014, 07:56 PM
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^^^ That's likely the problem right there. When you change the oil, it's best to add about 9 quarts, get the oil up to 180F or above, and then check the oil level, at idle, on level ground (should be around the midpoint between the two hash marks). A lot of oil remains in the system even when the tank and engine case are drained - you are probably now about 1.5 to 2 quarts overfilled and that is why the oil is heading out of the tank breather.

Last edited by Ronnie's.930; 11-13-2014 at 08:24 PM..
Old 11-13-2014, 08:20 PM
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Yeah, I went through this. Not puking but wet. Typical unconventional engineering. 99.9% of cars you fill the sump till the dip stick reads full. Not these cars. I think PP has an article on oil change. That is the procedure you should go to. I would link it but too hard on a phone sorry.
Old 11-13-2014, 08:30 PM
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12 qts = puke 100% of the time. We've all done it when noob.
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Old 11-13-2014, 08:39 PM
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Thanks, I will start with that and drain the tank down to the low oil mark and see what happens. I will get back with the results. WHAT a MESSSSS!!!
Old 11-13-2014, 08:39 PM
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If you're quick with your hands, you can unbolt the drain plug on the bottom of the sump tank, let out a bit of oil, and then stick the drain plug right back in. Apparently it's not as messy as you'd imagine.
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Old 11-13-2014, 09:11 PM
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My buddy suggested this method to change oil: empty all the old oil into a bucket. As you fill the oil tank with new oil, pour the old oil into the empty containers. Continue adding oil until all the old oil is gone. This will get you close to the correct amount of oil.
Old 11-14-2014, 03:50 AM
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Just be glad you realized in the garage, I went for a drive after overfilling a 911, only to look back in the mirror and find that I was being followed by a big, black cloud as the excess oil poured out on the exhaust. Wee bit embarrassing.
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Old 11-14-2014, 05:34 AM
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Did the same thing on a 73S years ago. Very embarrassing.
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Old 11-14-2014, 10:29 AM
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Would love to see a few pics, not too many early 3.0litre cars on here...

Old 11-14-2014, 05:01 PM
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