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Oil in radiator!

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portacabin1

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Discussion starter · #1 ·
Hello to all,i have a problem with my navara d22, the engine has only coverd around 8000 miles since it was fitted as a recon unit. I think i may have frost damage, my heater started to blow cold, even with the temp gauge showing the engine was up to temp, when i checked the water level i found thick black oil and to add the engine oil had all but gone from the block, there is no mixing of oil and water in the block, i have been a machanic fo many years and this has sent my head in a spin, i removed the oil cooler and preasure tested it to about 100psi with no air escape submerged in cleaning fluid.
The cylinder head has been removed and the gaskit looks 100% with no sighn of tracking across, has anyone ever had this problem? please help.

Regards :whistle:
 
Discussion starter · #3 ·
Liam said:
Never heard anything like this mate, screams a head gasket to me. I don't know what else it could be its a confusing one :scratch:
Click to expand...
I had to remove the radiator to get to the bottom pully bolt in the summer, i forgot to put antifreeze in it, and i think im now paying the price.
 
#6 ·
I've got exactly the same problem on my 2.2 diesel xtrail,
most of the oil is in the radiator, just clear black oil
There is so much in the rad its started to flow out of the expansion tank,
I'm clueless aswell so also looking for a solution if anyone has one?
 
Discussion starter · #7 ·
xtrailnotworking said:
I've got exactly the same problem on my 2.2 diesel xtrail,
most of the oil is in the radiator, just clear black oil
There is so much in the rad its started to flow out of the expansion tank,
I'm clueless aswell so also looking for a solution if anyone has one?
Click to expand...

Hi,im sorry to hear you have the same problem as me, mine also has pushed black oil into the expantion tank, i spoke to a local engine builder and he thinks i might have a crack in the block! i kind of agree as it has to be in the high pressure oil supply upwards towards the top of the engine block where it meets the cylinder head, i have removed my cylinder head (what a complicated job that was) and am going to block of the oil feed to the head and refill the block with clean water, disconecting the water pump, crank the engine and build up oil pressure looking out for any further evidence of oil emerging.

Goodluck with yours.
 
#8 ·
I've got a feeling that is exactly what is wrong with ours,
I'm just thinking about getting the whole engine replaced.
Its also in our expansion tank pumping through the overflow and wrecking my engine bay.
Its strange, it shows no problem with smoke, starting up or even the temp gauge.

I was hoping it was the oil cooler to be honest, but cant see it going that way.
is there anyway to test the oil cooler at all?
 
#9 ·
Common fault years ago in Ford tractors was porous engine blocks, often resulting in oil being pumped into cooling system,was driving one belonging to a neighbour 30 years ago and all of a sudden oil started to squirt out of the top of rad onto the windscreen.

If you have a prob with the block due to frost damage it may be a case of a new block.

If it was water in the sump a bottle of premium rad seal can sometimes sort it.

Only a mechanical fix could stop the oil
 
#10 ·
Referring to the manual, it appears the oil travels from the pump via the pressure relief & regulator valve to the filter and then to the oil cooler & cam chain.
It then travels to the main gallery, and from there it carries on to the head gallery.

Although you have checked the oil cooler with air it is still a possibility that this could be at fault, air is very easily compressed oil isn't, hydraulicly testing the oil cooler may be the only way to be sure, heat may also be a factor in opening up a small crack, or allowing oil to past the seal behind the oil cooler.

Perhaps bypassing the water feed to and from the oil cooler would help illuminate or confirm this area as the problem, to do this I think the water pipes to the oil cooler could simply be connected together using a small piece of straight pipe.
Then just make sure you have plenty of oil to start with, overheating the oil shouldn't be a problem as long as you don't run the engine for too long
If oil starts to come out of the water inlet / outlet on the cooler, you can probably assume the fault lies here. :D

If not at least you know to look else ware. :(

HTH

Shaun
 
Discussion starter · #11 ·
Involute Curve said:
Referring to the manual, it appears the oil travels from the pump via the pressure relief & regulator valve to the filter and then to the oil cooler & cam chain.
It then travels to the main gallery, and from there it carries on to the head gallery.

Although you have checked the oil cooler with air it is still a possibility that this could be at fault, air is very easily compressed oil isn't, hydraulicly testing the oil cooler may be the only way to be sure, heat may also be a factor in opening up a small crack, or allowing oil to past the seal behind the oil cooler.

Perhaps bypassing the water feed to and from the oil cooler would help illuminate or confirm this area as the problem, to do this I think the water pipes to the oil cooler could simply be connected together using a small piece of straight pipe.
Then just make sure you have plenty of oil to start with, overheating the oil shouldn't be a problem as long as you don't run the engine for too long
If oil starts to come out of the water inlet / outlet on the cooler, you can probably assume the fault lies here. :D
If not at least you know to look else ware. :(

HTH

Shaun
Click to expand...

Hello thank you for your reply, just a quick note refering to your idea with the oil cooler, i did remove the water pipes of the oil cooler and ran the engine to see if oil would appear from the water inlet/outlet pipes in the cooler to no joy! that was my very first port of call, the seal behind the cooler would let oil out on to the floor if that was to fail, i am clutching at straws it all a bit differcult to test. :cry:
I also have a 300tdi landrover, if i could put a 200/300tdi landrover engine in it i would be happy, but i am aware of the emition :?: (cant spell that) regulations, but they are sooooo simple and reliable.
 
#12 ·
I have no oil in rad but i'm loosing about a pint of water every six weeks... and the blower blows cold when it gets low. I've been told the coman problem on the D40 is the head is commonly porus and water will be seeping through the ali and into the manifold and coming out as steam... This makes sense to me :(
 
#16 ·
Perhaps this is the sign of the success of this forum.
We seem to be attracting rather rude individuals lately!
 
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#17 ·
Thats wierd, I never have to put water or oil in mine, thats all done at 18k services, I dont even have to top them up between services...

Why even wast peoples time putting this then...Obviously if a motor is running correcly nothing need to be added no need to rub peoples noses in it!!
 
#18 ·
YAMRED said:
I have no oil in rad but i'm loosing about a pint of water every six weeks... and the blower blows cold when it gets low. I've been told the coman problem on the D40 is the head is commonly porus and water will be seeping through the ali and into the manifold and coming out as steam... This makes sense to me :(
Click to expand...
That's the first time I heard of this, I did 100000 in my old truck and no sign of this problem anyone else have it?

Why not post it in the D40 section and see if anyone else has experienced the same
 
#19 ·
YAMRED said:
Thats wierd, I never have to put water or oil in mine, thats all done at 18k services, I dont even have to top them up between services...

Why even wast peoples time putting this then...Obviously if a motor is running correcly nothing need to be added no need to rub peoples noses in it!!
Click to expand...
I'm not rubbing anyones nose in anything, you have a problem with your truck that you claim is common, yet noone on here has ever heard of it. All I said was that I don't have to put water in mine. You say I am wasting peoples time with this comment, yet you made the comment in the first place, and posted it in D22. That is wasting peoples time. If that upsets you - tough
 
#20 ·
The peson who started the thread asked if anyone had this problem so i answered him by saying yes i did.. Any after speaking to Nissan in Richmond which you can ring and check they will tell you a porus head is common! If everyone answer like yourself saying theres was fine then how long would the thread be.... ! and how far down would the poor lad who started it or myself who is trying to sort this out have to scroll down!!
Come on use your brain!!
 
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