rough engine just after power reduction

Sydney Hoeltzli wrote:

Suggestions? Going out to clean plugs and make sure
all 4 cyl have compression this afternoon, what else
to check? I'm hoping for a badly fouled plug, but
would that produce high EGT on 1 mag?

It could do that. High EGTs can be produced by a slow fuel burn in that
cylinder, and this can be produced by fouled plugs.

Make sure you check the wiring harness too. Last time I had this sort of
problem, one plug was fouled *because* the other one wasn't firing and
she was running too rich on that cylinder. The other plug wasn't firing
because the plug wire had quit conducting electrons.

George Patterson
The optimist feels that we live in the best of all possible worlds. The
pessimist is afraid that he's correct.
James Branch Cavel