Yes. It may also intermitantly fail. I had one dropped and I would see
it fail every once in a while in flight. On the ground it always seemed
to run. Replaced it with the spare (ALWAYS keep a spare sprark plug and
wrench in the back of your plane) and never had the problem again.

-Robert


Kensandyeggo wrote:
Could having dropped a spark-plug (REM38E in a Lyc O-360-A2D) cause
static in the radio when on one mag with none on the other mag? What
other consequences might there be from a dropped plug? I've been
wrestling with a static-noise problem on one mag in the radio. I got
some
good advice here previously, but just remembered that I did drop a plug

on the floor and put it back. Don't know if this is when the problem
started or not. Can't remember. Thanks.