350z DE 2004 misfire?

[iNezzy]

Couple of days back i noticed a misfire on the car when the car was hot. During the misfire the smell of fuel was incredibly potent. If I let the car cool down, it goes away.

 

No eml.was illuminated.

It was suggested that I try unplugging the maf and running the car again, this did not seem to make any difference other than illuminated the eml.

 

Left if for a day, arranged recovery, during recovery the car was code scanned and showed:

 

Air mass and temp i understand are part of the same and a result of me unplugging.

 

Cylinder 3 misfire I suspect coil pack.

 

Now, i thought ill swap coil 1 and 3 nusg to see if the fault follows but now the car refuses to give me an error code? Despite trying 3 different scanners from cheap home  Bluetooth to professional equipment. So i cant actually see if the fault moved.  Whats the chances a coil fixes this? What else could it be? How can I get the car to spit a code at me...

 

 

[Keith D]

Sorry are you saying you swapped the coil packs over and the misfire went away?

 

[iNezzy]

On 02/09/2026 at 20:27, Keith D said:

Sorry are you saying you swapped the coil packs over and the misfire went away?

 

No, the misfire stayed (again only when hot) but the car refuses to give me a misfire code with any code reader so I cant see if the misfire has moved cylinder