UK Car Repair Questions? Ask a Mechanic for Answers ASAP
I am sorry that you have not been helped yet. I just came online and saw your question.
There is a very good possibility of bent valves, which will require pulling the cylinder head to verify.
Possible parts needed will be timing belt kit which includes the belt and tensioner, either new valves or a rebuilt cylinder head, timing cover gasket, cylinder headgasket, coolant, oil.
As to price, I need the last 8 of vin to pull prices and labor times