Hello has anyone got any ideas, I've tried all the usual things.
I was out in my 2004 350z, It was running fine nothing wrong with it. as I came into a village an I slowed down As I came out the village put my foot down and it ran horrible.
Its sound like its a misfire but not misfire its running rough no power. No engine light is on an no codes are stored, It's had new spark plugs new coil packs new injectors and the solenoids have been cleaned out no change. And I've done a compression test on it The biggest difference across the 6 cylinders is 10PSI, I've also check for vacuum leaks, Fuel pump is OK.
I work with cars myself but I've never come across this.