Issue with zfr5f-11 plugs?

[03protege5]

So I recently swapped to the zfr5f-11 long reach plugs and is it possible that I’m burning more gas with these plugs than the not long reach? I feel like my car runs worse on these plugs than the standard ones like I was using before. Previously I had the iridium’s in but not the long reach.

Regardless I’m definitely getting more fuel smell while driving around than I was before I made the swap.

Thanks!

 

[misnblu]

Did you set the gap on the plugs and torque to spec when installing?
Pre-gapped or not I always gap my plugs as I've seen variations on even pre-gapped plugs.

I'm using the long reach and no issues.