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Registered
Join Date: Aug 2004
Location: Wisconsin
Posts: 4,362
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Blue smoke on start-common?
I searched archives, but found no answers so.....I ask now:
Is it normal for a 911 to blow quite a bit of blue smoke on start-up? The facts: I don't drive the car a lot. It will sit a couple of days between starts, but when I do start it dead cold (75 degrees ambient) it poofs out a good shot of blue smoke and then subsides after a couple of seconds. It doesn't smoke (discernably so) when warm started. It doesn't smoke while driving either. I have followed the car and saw nothing. The motor was rebuilt about 4k miles ago. I did the PPI thing and it tested out less than 10% across all six. The p.o. told me that it did it ("they all do-nature of the animal") when I picked the car up, but it is more than I expected. Also, it currently uses Castrol 10/40. I normally run Mobile 1 20/50 in my BMWs. I won't drive it in the winter at all. The lowest temp the car likely will see is 40 degrees. Highest-100 degree. Any recommendations? tia 
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08-24-2004, 02:11 PM
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This is not unusual, especially if the car has been sitting for a couple of days. From what I understand, this is due to the flat boxer engine layout.
My '77 does this from time to time too. Although, I find it impossible to predict... sometimes it does it when the car has sat for a couple of days, and other times it's just random. The main thing is, as long as it only lasts a few seconds, then this is considered normal. -MAS
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77 911S Targa (current car) 87 924S (my previous car) |
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08-24-2004, 02:16 PM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
Posts: 16,493
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Completely normal. This question, along with "what oil should I use?" comes up at least once a month. Oh and I recommend 20w50 oil instead of 10w40, especially in the summer.
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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08-24-2004, 02:17 PM
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Monkey+Football
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Real thing to look for is what is your oil usage. How many miles before you have to add?
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<Insert witty comment> 85 Targa Wong Chip Fabspeed M&K Bilsteins and a bunch of other stuff. |
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08-24-2004, 02:18 PM
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Registered
Join Date: Aug 2004
Location: Wisconsin
Posts: 4,362
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BIG relief! Thanks for the rapid response!
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08-24-2004, 02:20 PM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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Go w/ the 20W50, observe the correct oil level checking procedure, and drive more often!
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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08-24-2004, 02:22 PM
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Join Date: Jan 2001
Location: Kirkland, Washington
Posts: 1,095
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The puff is actually related to the color of the car. My '79 is the same color as yours and it regularly indulges in a little puff.
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Jamie79SC |
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08-24-2004, 02:28 PM
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Mine will only smoke on start up for a couple seconds if the last drive was a short trip where she didn't warm up all the way. But if my last trip was a hot cruise, with proper revs and all, then no smoke on cold start.
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-Steve '87 Carrera Targa |
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08-24-2004, 02:28 PM
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Quote:
 These cars like to be driven. For example, when I bought my 911 over a year ago, the previous owner had obviously not driven the car that much over the preceding year. I've been driving it now on a daily basis for over a year (and over 20,000 miles)... and it runs much better now than it did when I first bought the car... smoother and more power. Aside from basic stuff, all I have done is DRIVE the thing... lots -MAS
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77 911S Targa (current car) 87 924S (my previous car) |
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08-24-2004, 02:30 PM
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