4.0L Oil blowing out of dipstick. Need help and queations?
#1
Thread Starter
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Joined: Sep 2011
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From: Elizabeth,Co
Year: 1988
Model: Comanche
Engine: 4.0L Inline 6
4.0L Oil blowing out of dipstick. Need help and queations?
Oil blowing out of dipstick? I have replaced both of the ccv, oil filter and oil filter housing o-rings. Valve cover and head are clean. Can the oil pump be going out soon? Anyother ideas?
Also what is this above the oil dipstick tube black and with the little tube on top.I pulled it off and its sucking air into it??? (Pic 2)
Also what is this above the oil dipstick tube black and with the little tube on top.I pulled it off and its sucking air into it??? (Pic 2)
#2
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Joined: Apr 2009
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Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
The vacuum thingy is your water control valve for the heater.
If you are blowing oil out the dipstick, your crankcase is being pressurized. Could be blowby past the rings.
Or a cracked piston(s).
If you are blowing oil out the dipstick, your crankcase is being pressurized. Could be blowby past the rings.
Or a cracked piston(s).
Last edited by Firestorm500; 09-19-2011 at 02:52 PM.
#5
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From: Elizabeth,Co
Year: 1988
Model: Comanche
Engine: 4.0L Inline 6
Originally Posted by Agent_Oragnge
what about blowing oil up from the valve cover?
#7
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From: Elizabeth,Co
Year: 1988
Model: Comanche
Engine: 4.0L Inline 6
Originally Posted by Firestorm500
The vacuum thingy is your water control valve for the heater.
If you are blowing oil out the dipstick, your crankcase is being pressurized. Could be blowby past the rings.
Or a cracked piston(s).
If you are blowing oil out the dipstick, your crankcase is being pressurized. Could be blowby past the rings.
Or a cracked piston(s).
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#8
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Joined: Apr 2009
Posts: 4,734
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Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
That's a dangerous situation. It's coming from somewhere. You need to take it in and have it diagnosed by a proper mechanic before your Jeep catches on fire.
#10
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From: Elizabeth,Co
Year: 1988
Model: Comanche
Engine: 4.0L Inline 6
Originally Posted by freegdr
is the front hose on valve cover still hooked up to breather box?
#12
Thread Starter
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Joined: Sep 2011
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From: Elizabeth,Co
Year: 1988
Model: Comanche
Engine: 4.0L Inline 6
Originally Posted by Firestorm500
That's a dangerous situation. It's coming from somewhere. You need to take it in and have it diagnosed by a proper mechanic before your Jeep catches on fire.
#15
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From: Elizabeth,Co
Year: 1988
Model: Comanche
Engine: 4.0L Inline 6
Originally Posted by freegdr
is there vacuum at the new ccv valve when running