Golf mk5 2.0tdi loosing coolant but there is no leak??

[MCTOPJONES]

Hi

I started my golf today and the coolant level light came on, when i checked it, it was low however i know it was topped up to the max level only three days prior. The car then began smoking for about five miles after i topped the coolant up, it has now stopped smoking but is still using water, any advice????

Thanks

[arman123]

what colour was the smoke?

[Daniel71]

if no external leaks, most probably the head gasket is on its way out

[Vagnuts]

if it has a water cooled EGR bypas it as I have seen A lot of these fail repetedly, as in loads of them, just take it out and run a hose from outlet to return, I bet that head gasket is not on its way out. if thogh egr is not water cooled-it might be head gasket !!!

[jamesh89]

Have you checked the dipstick for signs of water in oil? There will be a sweet smell to it if antifreeze is working it’s way into the engine oil.

I’ve just had a similar problem on mine which turned out to be the water pump and leaks here are hard to spot

[niall campbell]

EGR cooler

[Vagnuts]

EGR cooler

I agree as I'v said above, I'v lost count of how many water cooled EGR's even new, within weeks of fitting, start to leak again causing coolant loss-- mostly on a4 b7's though, but yeah they are a week spot across the board-I/we just take them off and blank egr then run pipes from /to--feed to return--problem solved !!!