I have oil blowing out of dipstick tube?

3 things come to mind...I'll go with the simplest first...you are over full on oil. The second is the PCV Valve is clogged...PCV stands for Positive Crankcase Ventilation...this allows the crankcase to vent..(this is where your oil is in the oil pan)...and the last...not a good thing but probably worth fixing...your piston rings are bad allowing blowby...(this is oil escaping past the piston rings and compression passing back past the combustion chamber into the crankcase). This causes pressure to build up in the crankcase and the easiest escape route is through the dip stick tube.

To check your PCV valve...this is the little item which is located on your valve cover...normally on the drivers side..simply remove it and shake it...if it rattles inside than odds are it's good. once you have done this place your finger over the end of it with the engine running and see if it has suction....if it does then this eliminates this.

If the engine oil level is ok...then sorry it's the rings in the engine and requires a rebuild or a replacement engine.

Oil Coming Out Of Dipstick

There are two possible reasons for this, and one is easy to fix and one not . There is a vent tube that runs from the driver side valve cover to the spacer under the air cleaner. Make sure that this tube is free from any obstructions. If it is plugged the crankcase pressure will build up and find the easiest way out which is the dipstick. If this hose is not plugged it means your engine has excessive blow by which is caused by worn piston rings. This can only be fixed by rebuilding the engine. Try changing to different brand engine oil it sometimes helps.

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I have oil blowing out of dipstick tube?

what are possible causes for oil to be discharge out of dipstick tube? a little to none at idle. much more when driving. engine is a 5.0 (305) chevy in a 1988 1500 scottsdale.. vehicle sat for approximately one year before I bought it.

Try this little trick. Spend a couple bucks and change your PCV, run a hose from the end of your dip stick tube into the top of a plastic jug with a hole in the lid for the hose. Place the jug somewhere safe under the hood... drive the truck and then check the bottle. If you have oil in the bottle then your rings are bad. Pour the oil back in your truck. you might be able to run like this for a while without dumping oil all over your engine. This is not a repair.

Serious back pressure problem. Try changing the PVC valve for starters. Journals and galley may have a blockage, having a certified shop do a BG flush on the lube system. It well cost you about $200.

Pressurized crankcase. Check pcv valve. It may be stuck. A full engine flush (someone else suggested, also) with BG flushing chemicals is a good idea. Good luck.

How about the bypass/regulator on the filter mount 89 Chevy 2500 4x4? Causing oil pressure to always be pegged on gauge, and when step on it it blows out worse? Spark plugs are dry no smoke out exhaust, PCV sucks my finger to it during idle.

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The Positive Crankcase Ventilation emissions system could be the culprit. Try changing the PCV valve, and making sure the connecting hoses and passage ways are clear.