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Gumba44
Join Date: Feb 2018
Posts: 6
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Smoking '75
Have had a '75 911S. Problem with intermittent smoking from the exhaust. Had the valves ,cams & injection worked on, and, for a while the motor ran as good as it ever had. Smoke started belching out of the exhaust. Parked it, restarted, and smoking occurred at idle. Did not over rev but believe it might be rings. Any ideas?
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02-19-2018, 05:00 PM
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Registered Minimalist
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I would say a blue puff of smoke is normal on startup sometimes. Is it prolonged smoking and are you sure it's coming out of the exhaust and not valve covers leaking onto the heat exchangers?
__________________
Duane / IG: @duanewik / Youtube Channel: Wik's Garage Check out my 75 and 77 911S build threads Last edited by 75 911s; 02-19-2018 at 05:09 PM.. |
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02-19-2018, 05:06 PM
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Gumba44
Join Date: Feb 2018
Posts: 6
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Duane, valve covers are fine and dry. Smoke exits the exhaust. Thought it was rings but not sure.
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02-22-2018, 04:04 PM
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Registered
Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,537
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Oil getting by will be the guides, the weak spot on the aircooled.
Bruce |
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02-22-2018, 06:26 PM
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Gumba44
Join Date: Feb 2018
Posts: 6
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Bruce, tks. Speaking of the air-cooled, does it pay to add the front-mounted oil cooler?
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02-24-2018, 02:20 PM
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Registered
Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,537
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Always, the dealers installed AC on many cars and oil reached 250F
By 77,factory installed air came with oil cooler and a console. I don’t know about earlier because in 75/76 air hung below the dash. Bruce |
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02-24-2018, 06:30 PM
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1975 Porsche 911s
