basskisser, you have just been awarded The Schlackoff Too-Stupid-For-Words
Award.

congratulations, basskisser.

Did it specifically state *SPARK plugs*? There are many, many kinds of
"plugs", you know.


In a diesel? that can be cleaned?

Yes.



Why do you need a "couple dozen" of them? Where does the writer say
that they cleaned a couple of dozen of these plugs? Now, I'll tell you
about some possible *plugs*. Cooling system, sometimes has several
plugs in the plumbing, at various places, mostly to drain. Electrical
connections, for glow plugs, instrumentation, possibly starter. Was
there an air compressor running off of the engine? That would indeed
have plugs.
Now, YOUR turn. Please show where they said "spark" plugs.