I have a 92 turbo miata and i'm gettn a lil bit of an oil leak down onto the number four spark plug. The car doesn't smoke at all and the motor doesn't have any sign of a major oil leak anywhere else. The car doesn't use any oil at all. I haven't had the car but about four weeks so I'm still gettn used to its tendencies. Is this a major problem that needs to be looked at right away or is it less major. Any ideas will be appreciated. Thanks for any info. I have some pics if anyone wants to see them.

 

stagger your rings on your number four piston...your rings could have a slight gap in them and that is letting oil up through the spark plug firing chamber....if you stagger(shift rings on piston so that the gaps are not close enough together to let the oil travel through) your rings, this will fix your problem....if you go to this musch trouble to stagger your ring, then you might as well change the rings for that piston anyway.....even though you are not getting smoke from the exhaust, this might be an indication of you rings about to fry....hope this helps...

 

thanks for the info