I just posted this same thing on another thread, not saying it is your issue, but worth a check. Check the CPASV (camshaft position actuator solenoid valve) seals. There are two of them that tend to leak after you get some miles on the 1.4 turbo engine. Not a big deal to replace. I replace mine in about 15 minutes, cost was $8 for the seals. There is a thread in the How To section of this forum that will walk you through the process if you think that is the problem. Not saying this is your problem, but could be, as mine had oil on the pan from these seals leaking.