Water in Oil?
Submitted: Saturday, Oct 19, 2013 at 13:02
ThreadID:
104786
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Member - Christie M
Morning, I have a Pajero NL V6 3.5lt petrol/gas. A few days ago, we had an issue with the car blowing white smoke on a short drive after driving fine all day. After a couple of hours stopped, when attempting to re-start on gas there was nothing, wouldn't even try to turn over. Switched it to petrol & it started but made a loud clunk noise so turned it off. Turned it back on & it started no worries, but overheated on way
home (2km drive).
After getting it
home, we noticed there was no water in the radiator, and milky oil on the dipstick but not on the underside of the oil filler cap.
Since then we have done the following:
*Flushed Radiator completely - No longer any oil in radiator or any bubbles/frothing
*TeeKay tested and came up negative for exhaust gases
*Car no longer over heats
*Bypassed the gas converter for water
*When radiator cap is off, no loss of water when running
*Changed oil out 5-6 times but is still milky in fact even whiter than when we started. It did get slightly better for a time but then got whiter
Car stalls under braking during
test drive but did not over heat. Did lose small amount of water from overflow but think this might be solved by replacing radiator cap.
Any suggestions? We will be pressure testing the cooling system this evening or tomorrow.
Reply By: Ross M - Saturday, Oct 19, 2013 at 15:00
Saturday, Oct 19, 2013 at 15:00
Christie M
If you had white smoke then thee was most likely water in the cylinder. Water possibly from gas converter or head crack.
A
test for exhaust gas in water doesn't always indicate correctly.
If there is water in the oil then there is a major fault somewhere in the engine.
The clunk was most probably a cylinder hitting a hydraulic lock ie water in the cylinder, The pressure involved can damage rods and big end bearings too. As the water is squeezed out of the cylinder then it will crank again and start.
Won't usually run without further problems developing.
If you can't pin it down to a definite fault in the gas converter then it would seem the engine will require a look see inside, because of the water in oil factor alone.
AnswerID:
519980
Follow Up By: Rob K (VIC) - Saturday, Oct 19, 2013 at 16:33
Saturday, Oct 19, 2013 at 16:33
Hi Christie M,
Agree with other possibilities mentioned so far and I'd also be looking a little more closely at the gas converter as
well as the cylinder head/block. The water to heat the liquid gas from the LPG tank into vapour comes from the engine cooling system and gas converters have been known to corrode through the jacket into the gas chamber leaking water into the gas side of the converter. You might consider getting the LPG system checked as
well as other possibilities.
Good luck with it all.
Rob K
FollowupID:
800335
Follow Up By: Ross M - Saturday, Oct 19, 2013 at 20:19
Saturday, Oct 19, 2013 at 20:19
If it got hot, the head tension may be less and head slightly warped or not maintaining pressure on the oil pressure galleries to the heads. The water pressure can also/will then find the easiest way out and since the water jacket is nice to oil drain returns to sump, the water system pressure can easily find it's way to the oil in the sump.
Either way it's off with his head or if V6 x2.
FollowupID:
800354
Follow Up By: Erad - Sunday, Oct 20, 2013 at 08:31
Sunday, Oct 20, 2013 at 08:31
My guess is that the LPG converter sprung a leak and you lost your coolant. Then the real damage started... You probably have a blown head gasket (which one?). whatever - it is an engine out and strip. Expensive operation.
If push comes to shove, you can get a 3.5L engine from a Magna fairly cheaply and then you have to use the sump and oil pickup from the Pajero. You have to make up a bracket to mount the cam angle sensor on front of the L side head. You have to discard the distributor from the Magna and use the blanking plate from the Pajero on the rear of the R head.
If you need them, I have 4 new standard pistons, rings, gudgeons and bearings to suit the Pajero 3.5 engine.
FollowupID:
800383
Reply By: olcoolone - Saturday, Oct 19, 2013 at 19:49
Saturday, Oct 19, 2013 at 19:49
QUOTE
Since then we have done the following:
*Flushed Radiator completely - No longer any oil in radiator or any bubbles/frothing
*TeeKay tested and came up negative for exhaust gases
*Car no longer over heats
*Bypassed the gas converter for water
*When radiator cap is off, no loss of water when running
*Changed oil out 5-6 times but is still milky in fact even whiter than when we started. It did get slightly better for a time but then got whiter
Can I ask why you spent heaps of time and money on products that will not fix the problem?
I suggest taking it to a mechanic for repairs, more than likely a head gasket or cracked head or block.
I would hate to see if you had a heart attack......
AnswerID:
519995
Follow Up By: Member - Andrew L (QLD) - Saturday, Oct 19, 2013 at 20:49
Saturday, Oct 19, 2013 at 20:49
Yep, agree, block, head or head gasket issue or combination.
It's gunna be an expensive fix, and getting worse trying to get rid of the effects and not the cause of the problem.
FollowupID:
800356
Reply By: The Bantam - Sunday, Oct 20, 2013 at 09:32
Sunday, Oct 20, 2013 at 09:32
If you have water in the oil, it is most unlikley that came from the gas converter.
When head gaskets fail, or heads and blocks crack the variuos fluids go where they please at the time and not always both directions.
You will only get exhaust gasses in the radiator If there is a failure between the exhaust path or the cylinder and the water jacket...AND if the pressure differeneces favour gasses passing that way.
You have had water in your oil and oil in your water.....that is a certain failure between the oil galleries and the cooling system.
No mater how optomistic you feel, its a major issue that means the heads have to come off minimum.
I have replaced a few head gaskets parked in the driveway and if the head and
the block are OK its no biggie...in a 4 cylinder or a straight 6.....but its much harder work in a V motor.
Put bluntly I'd be looking for a donour or a new truck.
cheers
cheers
AnswerID:
520031