Oil Blowing Out of Dipstick Tube

What will cause motor oil to blow out of a dipstick tube?

By genep. from Live Oak, FL

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September 27, 20090 found this helpful

There is oil pressure inside of the engine. Do you recall the old days when every car had a oil pressure gauge on the dash board? Nowadays, a light comes on when the oil pressure is low. So if the oil dip stick is not secure the pressure of the oil in the engine (when the engine is running of course), will force the oil out of any low pressure area, in this case the dip stick tube.

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April 3, 20111 found this helpful

It is likely caused by blow-by, be sure the oil level is not over full as well. It is a possibility the PCV Valve is not working properly and causing the pressure buildup as well, replace the PCV Valve first. This also may be caused by Blow-by that is caused by broken or stuck lower compression rings in turn causing the pressure to build up inside the engine, if replacing the PCV Valves doesn't stop it then get some top engine cleaner and remove all spark plugs and poor the whole can of fluid inside the spark plug holes equal amount to each cylinder, let it sit over night (spark plugs left out). To stop a real mess lay rags over where the spark plug holes are then turn over engine (plugs are out of engine) after the solution is pumped out, replace the spark plugs and start engine and see if there is blow-by if Ok your fixed if not then a ring job may be requires, Try the simple first and then the later last. Hope this helps, God bless you.

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Anonymous Flag
October 28, 20150 found this helpful

If all else fails, check the bottom of intake manifold for a hole burned through it. I had a oil blowing 350 and that was my problem.

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