Squeaking out of the rear pipes - yipes!

Checked all the plugs on Sat. Some diff between them, the best were dry and a bit brown and the worst 2 or 3 had just s smidge wet on them. These are AutoLites with only about 100 miles on them, but they all look pretty good; none grubbed up and none dry/white.

One thing ... as carefully as I pulled the wires, the second one - and the only one - got stuck on the plug and left the connector on the plug. The plug itself was one of the more wet ones, but still not gummed up.

I jammed the connector back in all the way, but I don't know if I'm gonna need a new wire set now; shame because they're good quality and not too used.

At any rate after all that it runs about the same as before. The chirp most comes in when the engine is settling back to idle after a rev-up. No oil coughs out, and no other symptoms. It's sounds like "vvvvvvvvvrrrrrrrrroooooooooooom, barble, barble chirp chirp chirp".

It's really weird.

EDit: I plan to replace just that one wire and see if it makes a diff.