I am loosing 2-3 litres of coolant every 2-3 weeks.
A mechanic looked at it and did a pressure test(no drop), couldn't see any leaking( I also put paper under car to check for leaking). He checked the oil looking for tainting.
2 days ago I started getting a rattle in the engine. He thinks it's the fuel pump but can't guarantee that fixing it will solve the problem.
Stumped?