Coolant in Oil

[mastercamper]

So after 17 years it’s happened to my 03 Discovery,Coolant in my oil. Started the truck this morning smoked heavy for about a min or so. Drove to work that’s a little over a mile away drove fine. Checked coolant because no heat and no coolant in revisor. Put coolant in drive home not smoking at all. Checked oil and it’s milky. Head gaskets done 2 years ago next month it would loose a little coolant at times but nothing in the ground over the last few weeks and has been running good. Never overheated it got hot once or twice but got it shut off before anything bad happened. Just bought the parts to do front cover gasket, timing chain and oil pump.
Any thing other than what I’m guessing would be an internal failure on the gasket? Not sure what the next step would be.

 

[eburrows]

I had a similar failure, and am currently in the process of replacing the timing chain cover gasket, after having done the head gaskets and had the coolant loss re-occur.

 

[mastercamper]

I had a similar failure, and am currently in the process of replacing the timing chain cover gasket, after having done the head gaskets and had the coolant loss re-occur.

At this point I’m not really sure where to start. I don’t think that the head gasket failed. I would think if the did I’d see coolant around the heads.

 

[terryjm1]

At this point I’m not really sure where to start. I don’t think that the head gasket failed. I would think if the did I’d see coolant around the heads.

Sorry for the likely obvious question. Were the heads resurfaced when you did the head gaskets?

 

[Howski]

Think you’re the right train of thought with the front cover. Had the same exact thing happen to me

 

[mastercamper]

Sorry for the likely obvious question. Were the heads resurfaced when you did the head gaskets?

Yep

 

[roverchef]

Run a compression test before tearing anything apart. If it comes back clean then move forward with the timing cover.

 

[mastercamper]

So today I pulled the plugs and they don't show any sign of coolant and from what I could see into the cylinder none there. Did a pressure test and it lost pressure after 15 min and I found a leak in my radiator. Going to check it again tomorrow and make sure its holding pressure.

 

[mastercamper]

Dropped the oil and got the water pump pulled off. Tomorrow oil pan and front cover. Still hopeful it’ll be a gasket failure in the front.

 

[roverchef]

Could be in the radiator too. They like to crack internally in-between the oil cooler and the coolant

 

[mastercamper]

Could be in the radiator too. They like to crack internally in-between the oil cooler and the coolant

Radiator was clean. When I pressure tested it I found a leak so I’m waiting on a new one.

 

[special ed]

You already have it apart but whern it is together (for the next guy that sees this) pull the oil pan which is easy and pressure test the cooling system. You can see everything in the engine to tell where the coolant is coming from. Typically it is the timing cover gasket but we have seen a cracked block leaking down around the liner. To note D1 and classic have oil cooler in the radiator and can(but ive never seen on one on these) leak and D2 does not.

 

[mastercamper]

You already have it apart but whern it is together (for the next guy that sees this) pull the oil pan which is easy and pressure test the cooling system. You can see everything in the engine to tell where the coolant is coming from. Typically it is the timing cover gasket but we have seen a cracked block leaking down around the liner. To note D1 and classic have oil cooler in the radiator and can(but ive never seen on one on these) leak and D2 does not.

I'm going to pull the pan and clean it out. Are you saying to test again after the pan and front cover are off?

 

[special ed]

What im saying is with the car completely together you can pull the pan only and pressure test the cooling system. Just the pan off nothing else. Once you pull any hose off you cant pressure test it. The pan is super simple to remove with everything else in place.

 

[mastercamper]

What im saying is with the car completely together you can pull the pan only and pressure test the cooling system. Just the pan off nothing else. Once you pull any hose off you cant pressure test it. The pan is super simple to remove with everything else in place.

Ok,
Its apart right now.

 

[mastercamper]

Looks like I was on borrowed time with this gear.
So I’m looking at the Rave it mentions a few tools LRT-12-183 for the oil pan and 12-090 for the oil pump gear drive.
Are these necessary?

 

[terryjm1]

Looks like I was on borrowed time with this gear.
So I’m looking at the Rave it mentions a few tools LRT-12-183 for the oil pan and 12-090 for the oil pump gear drive.
Are these necessary?

Wow! As far as special tools, I don’t think so. I didn’t use special tools for the ones I have done.

 

[terryjm1]

You already have it apart but whern it is together (for the next guy that sees this) pull the oil pan which is easy and pressure test the cooling system. You can see everything in the engine to tell where the coolant is coming from. Typically it is the timing cover gasket but we have seen a cracked block leaking down around the liner. To note D1 and classic have oil cooler in the radiator and can(but ive never seen on one on these) leak and D2 does not.

What does the D2 do for an oil cooler?

 

[discostew]

At this point I’m not really sure where to start. I don’t think that the head gasket failed. I would think if the did I’d see coolant around the heads.

You might be right. If you want to test the front cover pull the oil pan off it and pressure test the cooling system.

 

[mastercamper]

Wow! As far as special tools, I don’t think so. I didn’t use special tools for the ones I have done.

It came off no problem, then I started looking for the timing chain pages and started seeing all these special tools. The oil pan just drops off not sure why anything else would be needed.