answersLogoWhite

0


Best Answer

A. i work in a desil repair shop, big rigs, so im not sure if its the same but where i work its a big problem, usually needs an in frame kit. the problem is the compression in the cylender(s) escapes somehow (rings, scratches in the cylender wall ect.) into the crank case, in turn pushing oil through the filler!, good luck

User Avatar

Wiki User

15y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What causes oil to blow out of the oil filler cap?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the definition of an oil filler cap?

An oil filler cap is a metal that covers the hole where the oil is poured.


What is an oil filler cap?

Oil filler cap cover the hole in the engine where engine oil is added


You were mowing and oil came out the right side of your mower on your foot the cap came off did the engine blow?

Not necessarily. If the oil filler cap wasn't on tight it could have just vibrated off. If the cap is not on the filler tube it will blow oil out of the tube with a good running engine. I would refill the oil, tighten the cap, clean up the oil spill and try the mower again to see what happens. Chances are everything will be fine.


What are possible causes for pressure coming out of the valve cover oil filler cap hole on a 97 Nissan pickup.?

the cap is open


Which oil to put in after oil change?

Check the oil filler cap or the owners manual for recommended viscosity.Check the oil filler cap or the owners manual for recommended viscosity.


Why is oil coming from the filler cap when engine is running?

Excessive blow-by (a tired engine) and/or the PCV system is not functioning correctly. Also, check the condition of the gasket under the oil fill cap.


How do add oil in a 1998 Jeep 4 liter?

Open filler cap, add oil, replace filler cap...


How do you add oil on an 82 Chevy 350 when there is no oil filler cap?

There is usually a cap on one of the valve covers. There is an oil filler cap, you are just overlooking it. Look closer.


What would cause the filler cap dip stick to blow out on a 2003 Harley Sportster?

there is a check valve in the oil system that is stuck open over filling the oil tank will cause the dipstick to blow out of oiltank


Where is the PCV valve located on a 2007 Dodge Durango 4.7?

It is in the back side of the oil filler housing. Look just behind the oil filler cap.It is in the back side of the oil filler housing. Look just behind the oil filler cap.


What is blow back on 1990 Jeep Cherokee Laredo?

blow back or blow-by is pressure that builds up inside the engine causing oil to be blown out of vent,oil stick,oil filler cap, or into air breather.. Causes of blow-by ---- Bad PVC valve (Positive Crankcase Ventilation ) Worse case is worn piston rings or cylinder walls - engine needs to be rebuilt. http://en.wikipedia.org/wiki/PCV_valve


What causes the oil dip stick to come out allowing for oil to blow out hole?

if oil is blowing out dipstick hole, this indicates that the inside of engine and oil pan are pressurizing.check to make sure oil filler cap is venting and not clogged.if this is not the problem, the other cause is broken piston rings causing pressurization of engine