I just picked up a 03 Disco 2 from dealer lot and have had some issues with coolant loss recently. I had it for a few weeks so far and wasn't able to get any services records on it at purchase. I has about 154k miles on it.
So initially there was a leaking hose which I fixed and then found out the bleeder was bad. So I replaced the 3 top hoses and bleeder. Then I noticed the cap was broke by the bottom o-ring and the bottom o-ring had actually fallen into the expansion tank which I fished out. I replaced the cap and everything seemed good and dry afterwards. But now I'm getting fluid loss out of the overflow and the cap. Those seem to be the only places from what I can tell. I have my doubts about the cap, it's new but it was cheaper then most. It's a 140 cap but is all black and looks a bit generic. It's weird because fluid in the expansion tank will be half empty but will still drip out of the overflow tube.
The temperature gauge stays dead center and the a/c runs solid. It doesn't go into the red. I did replace the thermostat to be safe and it looked pretty old. I also replaced the expansion tank because it looked like it was kind of rough and melted inside by the o-rings. I pressure tested the system cold and it held 16 psi for an hour with no movement so it looks like head gaskets should be good. I felt the radiator when it was hot with my hand. It was hot all over. By the top hose I could barely hold my hand and down by the bottom hose I could hold my hand their for a few seconds. The middle I could touch and hold unless I got close to the top hose. So not sure how hot that should be.
Before I get into any big part purchases or deeper into the engine I wanted to see if anyone had an thoughts or ideas on what it could be. Like I said it only seems to be leaking from the overflow and/or cap. I've never actually seen it come out of the cap, but I see coolant on top of the expansion tank after I stop and fluid drip out of the overflow.
Thanks for any help.
So initially there was a leaking hose which I fixed and then found out the bleeder was bad. So I replaced the 3 top hoses and bleeder. Then I noticed the cap was broke by the bottom o-ring and the bottom o-ring had actually fallen into the expansion tank which I fished out. I replaced the cap and everything seemed good and dry afterwards. But now I'm getting fluid loss out of the overflow and the cap. Those seem to be the only places from what I can tell. I have my doubts about the cap, it's new but it was cheaper then most. It's a 140 cap but is all black and looks a bit generic. It's weird because fluid in the expansion tank will be half empty but will still drip out of the overflow tube.
The temperature gauge stays dead center and the a/c runs solid. It doesn't go into the red. I did replace the thermostat to be safe and it looked pretty old. I also replaced the expansion tank because it looked like it was kind of rough and melted inside by the o-rings. I pressure tested the system cold and it held 16 psi for an hour with no movement so it looks like head gaskets should be good. I felt the radiator when it was hot with my hand. It was hot all over. By the top hose I could barely hold my hand and down by the bottom hose I could hold my hand their for a few seconds. The middle I could touch and hold unless I got close to the top hose. So not sure how hot that should be.
Before I get into any big part purchases or deeper into the engine I wanted to see if anyone had an thoughts or ideas on what it could be. Like I said it only seems to be leaking from the overflow and/or cap. I've never actually seen it come out of the cap, but I see coolant on top of the expansion tank after I stop and fluid drip out of the overflow.
Thanks for any help.