76 911 Black Smoke
10-23-2001, 06:49 PM
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Instructor
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76 911 Black Smoke
I just brought a 76 911 with 11yrs and 37k on a complete rebuild.The car dosn't smoke on start-up or in normal driving but when I bring it to redline it blows out black smoke.It goes away within a few seconds,but I can see it behind the car.Is this do to lack of use? (only 37k in 11 yrs).
10-23-2001, 07:34 PM
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Are you hitting the rev limiter?
When I had a 2.7 in my '77, it did the same thing at or near the rev limiter - I think the CIS may be just dumping in too much gas. But my 3.6L does it when I hit the rev limiter, which causes unburned gas due to the terminated spark.
When I had a 2.7 in my '77, it did the same thing at or near the rev limiter - I think the CIS may be just dumping in too much gas. But my 3.6L does it when I hit the rev limiter, which causes unburned gas due to the terminated spark.
