Fi tech raw fuel smell

[comet_666]

Hi guys, have been battling a raw fuel smell from day 1 (no there are no leaks)
I just bounced the AFR at idle to 15 which helped quite a bit, but anyone else have a similar issue? I thought it may be a leaky injector but it's not.

[Dino]

Check for exhaust leaks, check vacuum, check plugs, test O2 sensor. Where did you place the O2 sensor?

[comet_666]

There were exhaust leaks that are now fixed, O2 is right before the header collector. I have replaced the plugs at least 5times in 6 years, not because they were fouled but just because.