One Wire Bad on a Slick Harness

Do you have to replace the entire harness or can you replace the wire?

I've replaced the plugs on the left rear cylinder and checked to make sure
no induction leak. The egt on no. 2 cylinder is running 200 degrees low.
The other 5 cylinders are fine.

Mag check shows the problem clears up on the top plugs but that one #2
cylinder misses (shown by low egt and rough engine) on the left mag firing
the lower plugs.

I'm going to look today to make sure the valves are opening and closing.

Do you have to replace the entire harness or can you replace the wire?

You can replace one wire. There is special tooling needed though if there are
ways around it someone on this NG will know how. It is also possible to test
the lead itself with a high tension leakage tester. A cooperative A&P might
help you there.

John Dupre'

" jls" wrote in message
...
Do you have to replace the entire harness or can you replace the wire?


To you who sent me the helpful e-mail, thanks. I did a high-voltage test
on the spark plug lead today and it failed, although it showed continuity
with a multi-meter between the mag end and the sparkplug end. A friend is
bringing a wire and the equipment to put it on tomorrow.

Those EGT gauges are wonderful things to have when you need to isolate a
cylinder not making full power.