Porsche 911 2,7 CIS oil in muffler? og oil leak in cylinder?

[Anders.]

Hey
I after starting up my 2,7 CIS engine from 1977 it started smoking white really badly after the first startup. The second startup it did not make any smoke when idling but after about 10 minutes it started smoking a little bit. I ran it like this for another 20 minutes and the smoke were the same. Is this oil in the muffler or heat exchangers or is it something else?

Dont mind the oil pressure i think i have to change the oil pressure sensor.

Here is the video of it running
https://youtu.be/9w39DrnUmXM

[Anders.]

Originally Posted by Anders.

Hey
I after starting up my 2,7 CIS engine from 1977 it started smoking white really badly after the first startup. The second startup it did not make any smoke when idling but after about 10 minutes it started smoking a little bit. I ran it like this for another 20 minutes and the smoke were the same. Is this oil in the muffler or heat exchangers or is it something else?

Dont mind the oil pressure i think i have to change the oil pressure sensor.

Here is the video of it running
https://youtu.be/9w39DrnUmXM

Sorry Made this on the wrong forum

Redirect:
Porsche 911 2,7 CIS oil in muffler? og oil leak in cylinder?

[Trackrash]

My first impression is your rings are shot.

That said, when the motor sits for a while or if the oil in the tank is too high, oil can work past the rings and oil pump and even get into the exhaust causing smoke. If that is the case after a while, assuming the tank is not overfilled, the smoke should eventually go away.

Since I don't know the history of your motor it is anyones guess right now.