Help! I have Voo-Doo Pygmies in my driveway. A few weeks ago my wifes 744 B230F normally aspirated motor had oil all over the engine. The dipstick was protruding from the tube about an inch and a half. I cleaned the motor after placing the dip stick back in proper position and all is well. Then a few days later I looked underneath my '87 745Ti and there was oil everywhere. Same thing! The dipstick was up about an inch and a half and oil had been spewing up the tube and all over the motor. Is this a 740 thing, a B230F/FT thing. What goes here? Just a strange coincidence?

Mark H.

Hello, I have an 1987 760T.

Suffered the same incident last summer, with the dipstick out and oil sprayed all over the engine bay. The problem was the PCV (positive crankcase ventilation). All that was required was that this be cleaned. Since this has occurred I have not have any other problems of the same nature. The usual 3000 mile oil change and everything else is fine.

"...B230F normally aspirated motor..."

This is a standard problem caused by too much crankcase pressure. The excess pressure is most likely caused by a plugged crankcase ventilation system, particularly the flame trap, flame arrester, oil separator (aka "breather box"), the small vacuum hose to the intake, and the fitting in the intake.

If the dipstick didn't relieve the excess pressure, the rear and front engine seals would, and then you'd really have your hands full. In fact, these seals are probably weeping now.

If the front of the motor is wet, you might consider a new timing belt and tensioner along with the three seals.

Mark,

Usually this means excess crankcase pressure created by a clogged flametrap or by the associated hoses, manifold nipple or the oil seperator being blocked. If, however, you check for that and find there is no blockage (and therefore no excess crankcase pressure)you may need to just replace the O ring on the dipstick. I had a 90 740 with the B230F that did exactly the same thing and it turned out to be the dipstick O ring.

Be sure you have any excess crankcase pressure issues resolved. Excess crankcase pressure can build to the point of forcing one of the engine seals out of place and they are not a simple fix.

Randy

Mark i have a b230f and a b230ft myself and have never had such a thing happen. maybe you should look for changes in the weather, normally the dip sticj should not come out unless pulled but if the ring that secures it in places isnt there or went bad it could easly moves its way up.

Jason