Land Rover Repair: 97 DISCO OVERHEATING, screw out, air bubbles


Question
Hi,
I just took my Rover on a trip of about 400 miles. Half way
home it ran hot up to red so I filled it w/ coolant and it still ran
hot. I took it to a shop and they said there is a crack in the top
of my resevoir and it needs to be replaced for $200 including
labor. I got a second opinion and they said that the resevoir has
to be replaced but also the p/s hight pressre line is leaking, the
trans cooler line is leakingx2 and the oil cooler line is leaking.
Would the resevoir be the only thing herre to cause the car to car
to overheat or are these lines also a must to get fixed if I want to
see my truck run without overheaing again?   Thanks for all you
do, Justin

Answer
So It's a 300 tdi discovery? If yes, you can do these things to prevent the problem.

These ideas said to evrey 300 tdi owners!

1. Oftelnly check the coolers' cleanness, and steam clean carefully if you cannot see throuhg them.

2. When you fill the system with coolant allways do that in this way: screw out the plug on the top of thermostat housing, and top of the cooler. First fill the reservoir to normal level, then close it. Next fill the cooler, then close it. Finally fill at the thermostat house's top. If you fill the system this way, yuo can sure it's absolutely free of air bubbles.

3. If the cooler's and thermostat house closing plug is from  plastic already, than CHANGE IT TO METAL! Yo can buy any water plumber store (1/2' tube closing plug). You have to know the plasic plugs oftenly breaking and the coolant splash out in a max. 1 minute! When you realize what's the problem, the engine was overheated, and damaged!

4. If the tubes are oftenly very hard and the water comes out at the reservoir's cap, or you can see much white smoke  from the exhaust system at large load, it's a sign to the cylinder head or the gasket is faulty.

These engine are almost perennial if the oil changed oftenly, and you never "boil" them.