Recently, I posted regarding a problem where my van suddenly lost power and
I found that one of my spark plugs (#2) had broken (topic: "Broken Spark
Plug Electrode/Tip").  After receiving some kind advice from the list, I
simply replaced the plug and hoped for the best.  But after replacing, the
van was still running poorly, with low power particularly on acceleration,
as if that cylinder was not running right (it was firing).

After some obligatory useless fiddling, I ended up taking it to the shop,
which found that compression on the #4 cylinder was very low, while it was
good on the others, including the #2 which had the fried plug.  The van was
running fine before the spark plug incident.  So, strangely to me, it seems
that the spark plug incident on the #2 cylinder caused the problem I'm now
having w/ the #4.

Is this possible?  Any ideas?

Thanks,

James V
90 Carat