Coolant Leak

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p4ul_180

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3
Hello I am fairly new to range rover ownership having owned my 2003 4.4V8 for about 7 months or so.

During that time I have had to replace various hoses in the engine as these have blown off (1 case) or perished. The car has been using coolant and eventually after the replacement hoses the specialist garage said the radiator required replacement.

After the new radiator I then had approx 2 months and 3000 miles of driving with no problems at all when the coolant indicator came on. The water bottle was low and I topped up, since this time the leak has got worse and worse. I now do a daily check to do my 6 mile commute.

I took my car to a local garage this time who conducted a general service and tested the cooling system to which he reported back he thinks the head gasket has gone. He used a test which he claims is 99% accurate whereby you take a sample of water???

I am in 2 minds what to do now as the head gasket on a 4.4V8 is major. My car runs fine and performs fine, there is no white smoke the water is normal and the oil is normal.

I noticed this morning a wet patch on the drive and when tested the water tasted sweet (coolant). This confirms to me the coolant is still leaking from somewhere at the back of the engine? I have had pipes replaced here before.

When I spoke to my local specialist he confirmed he has NEVER had to change a head gasket in a 4.4V8. I am wondering if I am very unlucky or if my diagnosis is incorrect.

I am not sure what to do next so any advise would be greatly appreciated.
 
Hello I am fairly new to range rover ownership having owned my 2003 4.4V8 for about 7 months or so.

During that time I have had to replace various hoses in the engine as these have blown off (1 case) or perished. The car has been using coolant and eventually after the replacement hoses the specialist garage said the radiator required replacement.

After the new radiator I then had approx 2 months and 3000 miles of driving with no problems at all when the coolant indicator came on. The water bottle was low and I topped up, since this time the leak has got worse and worse. I now do a daily check to do my 6 mile commute.

I took my car to a local garage this time who conducted a general service and tested the cooling system to which he reported back he thinks the head gasket has gone. He used a test which he claims is 99% accurate whereby you take a sample of water???

I am in 2 minds what to do now as the head gasket on a 4.4V8 is major. My car runs fine and performs fine, there is no white smoke the water is normal and the oil is normal.

I noticed this morning a wet patch on the drive and when tested the water tasted sweet (coolant). This confirms to me the coolant is still leaking from somewhere at the back of the engine? I have had pipes replaced here before.

When I spoke to my local specialist he confirmed he has NEVER had to change a head gasket in a 4.4V8. I am wondering if I am very unlucky or if my diagnosis is incorrect.

I am not sure what to do next so any advise would be greatly appreciated.

You need to get a static test done. They apply pressure to cooling system and search for leaks. Certainly worth doing before you let anyone take it apart for the sake of a duff hose joint.
 
you allso fogot to put where you are, there are guys on here that have good contacs. you could well just get riped off. so be a goood man and tell us where you are..
 
Leaking from the back of the engine you say!

Under the inlet manifold is a valley filled with coolant and the gasket leaks. It then drains via 2 holes down the back of the engine into the bell housing, on/near the rubber inspection cover.

coolant gallery sealing plate - see RAVE - AKA - valley pan gasket

To check, remove the engine cover, and have a torch to see if you can see any coolant or white coolant residue, esp at the back of the engine.

Index
E38 BMW 740i/iL M62 Intake Manifold Removal

Not bad job, about £150 in parts and a full days playing!
 
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maybe a feeze plug weeping...hidden behind gearbox housing perhaps? K-seal!

What is a feeze plug or should it have been freeze plug. I have been a mechanic for fifty years and never heard of them. Do you mean a core plug? It is a common misconception that core plugs are there to relieve pressure in block if it freezes. This is not true, they are there simply to allow the sand to be extracted from the block after casting.
 
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What is a feeze plug or should it have been freeze plug. I have been a mechanic for fifty years and never heard of them. Do you mean a core plug? It is a common misconception that core plugs are there to relieve pressure in block if it freezes. This is not true, they are there simply to allow the sand to be extracted from the block after casting.

Blimey, I learn something new almost every day on here!
 
i am in the midlands (birmingham) have a pressurre tester and exhaust gas in water test aswell. PM me if you are interested. As for core plugs, yes it is for the cast, however if the cooling system has no antifreeze then when the water freezes to ice it expands causing core plugs to pus out. As per city and guilds back in the day, it was a exam question if i remember right.
 
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