A service tech suggested the head gasket was blown. It is a V8 and I look inside the oil fill cap and see a milky liquid mixed with the oil. Could this be water mixed with oil? How can I tell if the gasket is actually blown?
2007-02-07 15:10:17 · 8 answers · asked by Bonathon M 3 in Cars & Transportation ➔ Car Makes ➔ Jeep
Sounds like you have a blown head gasket. Contrary to what the amateurs above are saying, A compression test may or may not tell you anything. A head gasket can blow between the cylinder and a water jacket, a cylinder and an oil jacket or an oil jacket and a water jacket. The later is less common but it sounds like what you may have.
If you have this condition, a cylinder compression test will read OK because intake air will not be leaking out the gasket break.
Another type of compression test - one that tests the colling system is what will benefit you most.
Any reputable garage can do this and it doesn't take long.
Good luck
2007-02-07 16:18:28 · answer #1 · answered by sk33t3r 3 · 0⤊ 0⤋
The head gasket is blown! If the oil is milky, mixed with water, your head gasket is blown. It could also mean that your intake gaskets are blown.
2007-02-10 08:49:00 · answer #2 · answered by Çåŗőľîņẫ§ħŷġĭ®ł 5 · 0⤊ 0⤋
If you have a blown head gasket, your car will be very sluggish when you drive it, white smoke will come bellowing out your exhaust pipe and if you check your oil it will look like a mucky brown oil and water mixture-can't miss that one. It's really hard to tell if and when a car needs a valve job, knocking, clanking, or rattling from the engine could mean several things. Dealers lie a lot when it comes to things like that, so be careful. If you know how to change spark plugs and wires, start with that especially if your car is back firing, could be that you are running on one less cylinder...and so on.
2016-05-24 05:25:14 · answer #3 · answered by ? 4 · 0⤊ 0⤋
It is water oil emulsion, and it means that for whatever reason the crankcase vent system is not working (PCV valve) as it should to pull fresh filtered air into the crankcase and remove fumes and moisture from combustion gasses blowing by the rings. Replace the pcv valve and clean or replace all filters in that circuit. I've put 245,000 miles on an engine like that one and have had that problem in cold wet weather conditions twice in 16 yrs. It is not a head gasket problem.
2007-02-10 14:25:14 · answer #4 · answered by mopar 1 · 0⤊ 0⤋
Have a compression test performed. If air is bubbling through the radiator then the head gasket is blown.
2007-02-07 15:18:22 · answer #5 · answered by nicewknd 5 · 0⤊ 0⤋
See your local dealer and ask to see Technical Service Bulletin 09-01-00. It states that there may be a issue with the oil cap which "causes a foamy oil emulsion accumulation inside the oil fill housing" as it says... I'd check this out first! Then if it is worse... have a tear-down inspection..
2007-02-08 02:55:10 · answer #6 · answered by Richie Rich 3 · 0⤊ 0⤋
If the head gasket was "blown" there wouldn't be any oil in it.
And it would be running hot. When oil breaks down it starts looking a little milky anyway.
2007-02-07 15:20:55 · answer #7 · answered by Enigma 6 · 0⤊ 2⤋
compression test
2007-02-07 15:18:53 · answer #8 · answered by Ibredd 7 · 0⤊ 0⤋