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Re: Crankcase ventilation problems 700 1988

posted by  someone claiming to be Mike Harrell on  Mon Oct 26 12:59 CST 1998 [RELATED]

I just purchased a 87 745 turbo that was blowing oil from the oil fill cap on the valve cover. I took a rather heavy handed approach. I bought a can of Gunk motor flush. I warmed the motor, turned the motor off and then poured the motor flush down the large hose leading to the flame trap. Initially, the motor flush would not move through the flame trap. Within a few min. it was running through the hose and into the flame trap as fast as I could pour it. I then blew through the hose with compressed air, started the motor and let it idle a few min. Then drained the oil and changed the oil filter. Just to make shure all of the motor flush was out, I again blew through the flame trap with compressed air. I plan to drive the car about 1,000 miles and replace the oil and filter again. I know this is probably sacrelidge to some but I think this is the fix. The motor is no longer blowing oil out the breather.





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