Hi guys I’m running out of ideas, my 2003 350z UK spec has a no start issue, computers are coming up with codes bank cam sensor 1 and sometimes 2 (P0340) , both sensors have been replaced multiple times with OEM brands, wiring is saying there is current, don’t know what to do as it costs a fortune to get everything checked as it’s a non runner, paid for a mobile mechanic and all he did was try to start it 15 times and gave up, someone help please, when we do get the car to run it sounds like this before it dies: