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V12: White Smoke and Black Plugs

V12: White Smoke and Black Plugs

Tom Russ

J Lodema wrote:

Another more serious problem is the following. The right bank has some misfires and is still not running really smooth. Much better than it ever did since I own the car, but far from perfect. The right bank is producing much more white smoke at the exhaust pipe then the left bank.

I asume this problem is related with the misfires and rough running of this bank. Has anybody an idea what could cause all this?

If this is a V12/GM400 car, pull the vacuum line to the transmission vac. modulator and check for atf. When the vacuum modulator diaphram fails it'll suck atf into the right (A bank) intake. Any sign of fluid in this vacuum line is cause for replacing the modulator.


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