I have a 2006 Infiniti G35X with 107,000KM and I have been having some issues with it lately and hope to receive some help. I have my "service engine soon" light on as well as my "VDC OFF" light on.

My car is turning over quite a bit before starting and the engine is giving off a very loud sound when on and driving. I also have a few codes with my computer system:
-EVAP system leak
-Camshaft sensor (right and left), however i just changed my camshaft sensor a month and a half ago.
-My oil level seems to drop rapidly (less than 3000KM since last oil change and the tank was empty) but I'm not leaking oil on the ground.

Can anyone please help me out as I am not sure what to do and every mechanic I have taken it to so far just seems to give a quick fix and solve the root of the problem. Thanks.

 

What are the actual code numbers?

Evap system leak means a vacuum leak somewhere, or possibly a bad gas cap (usual cause)

Cam sensors...what brand sensors did you buy? Aftermarket or OEM?

The 3.5L is notorous for burning oil. The cause is the rings. The 6-speeds are more prone to it, but higher mileage automatics also can suffer from it. I was buring nearly 2 quarts per 3500 mile oil change on my 2006 X.

I replaced my PCV valve and that seemed to help. I still use oil, but it seems to be at a much slower rate since changing my PCV. $20 part or so and located on the passenger valve cover.