My plugs on my 1993 RX7 keep fouling, any ideas as to what to check?

Thanks!!

 

a/f ratio

 

You might have too cold of a plug too, what are you using?

 

whats new. whos dont. mine are good for about the first 1k after I change them then the pig starts to stumble and sputter ever now and then. I figure thats what happens when you have a system that injectos oil into the combustion chamber. (there is a check out in the tech manual for the OMP) go to www.iluvmyrx7.com to download the manual. Some say if you can afford it to changethe plugs every coulpe oil changes ($35) you can get the plugs the cheapest at www.NGK.com $6 ea keep your findings posted if you come across something.