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Coolant leak fixing.


Clark'sson

Question

One of my friends who has a pajero intercooler had a coolant leak.

He had checked the radiator all the horses etc and the water pump and there was no leak. He has checked for any signs of leak around the car and there was none.

It had been completely overhauled around 40000km ago using genuine parts bought from the company. And properly run in afterwards. There were no issues up to now.

This is a very slow leak around 500ml every 500km and the system has more than 8L of coolant. It's been always used and topped up with coolant. And it has never been overheated.

He is considering using a coolant leak sealer. Went to the internet and saw some positive reviews on a product called k seal.

Is there a product like that in sri Lanka. If so where to buy and is it worth a try.

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22 minutes ago, Clark'sson said:

Checked the cap and did a pressure check.

All were ok

Also checked the water pump and radiator all is ok.

The mechanic had told only the oil cooler system is left. 

What about the liqui moli stuff.

I was told it only seals at places it's exposed to the outside air

stay away from quick fix bottles. Find the root of the leak and fix it. Could be a loose hose clamp somewhere. But the leak test should have pointed out where the leak is. if done correctly. When you say leak test, did you pressure the system  to operating pressure? and observe?  The operating pressure is indicated on the cap.  Is the radiator itself leaking? How about he heat matrix inside the dashboard? If oil cooler is leaking then there should be oil in the coolant. 

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Pressurising to running pressure was done.

No oil in the coolant.

All horses clamps radiator cap and water pump replaced in the overhaul around 40 000km ago.

No root cause identified 

Last option was to dismenttal and check the head gasket which was replaced with a genuine one around 40 000km ago. Some say it could crack.

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15 hours ago, Clark'sson said:

Pressurising to running pressure was done.

No oil in the coolant.

All horses clamps radiator cap and water pump replaced in the overhaul around 40 000km ago.

No root cause identified 

Last option was to dismenttal and check the head gasket which was replaced with a genuine one around 40 000km ago. Some say it could crack.

Despite all this there is a leak according to the info, so it needs checking again. So get some competent mechanic to check all again. 

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