Alfa 156 1.9 problem
My car is an Alfa 156 1.9 JTD 16V 140 PS.
Unfortunately, I have a little problem with it. After undergoing something like 15 km, I raise the hood, and there is a strange bubbling sound coming from the cap of the expansion vessel.
After something like 150-200 km there is a big part of the coolant lost.
The radiator was changed by me, the expansion vessel and a few caps also.
I checked the fan, no problems there, 1st and 2nd speed are ok.
If I remember well, I did not changed the water pump when I bought the car aprox. one year and a half ago. I don't remember what the previous owner told me when I asked him about this.
What could cause this problem? Is it the water pump or something else (head gasket)?
(I am sorry for my bad English, I hope you understand)