Alfa 147 – Cooling water boils and some other problems

Hey, I came across this forum while googling and don’t know at the moment if I can lift the necessary repairs or if it’s still worth it. I can’t really “simple” with the workshops and would be very pleased about neutral opinions. Here are the vehicle data in advance: Alfa Romeo 147 2.0 16V T.SPARK, 110 KW, EZ: 2005, kilometers 104,000 Upcoming service work: 1. Timing belt incl. water pump 2. Phase adjuster (I read here from a inexpensive Rep-Kit ) The car “cracks”, probably this “diesel truck”, which I also read about. 3. Front axle, it grapples and squeakes quite badly. However, the shock absorbers were already renewed 3 years ago. 4. Cooling water cooks for a few days after a few kilometers of driving. The service work regarding the wear parts such as timing belts and front axle are so far understandable for me. However, the latest problem with the cooling water causes me great worry. I leave the car since then, because after A few kilometers from the on-board computer alarms and the temperature indicator rises to 130 degrees. The workshop could not take the fear of a “great damage” by telephone, the master mentioned immediately “possibly cylinder head seal and that can become expensive”. So oil is not visible in the water tank. Switching on the heating did not lower the temperature. What could be the cause? Maybe only something “small”? if required. LG Tanja