The 71 TX9 Rat Nest Contest!

SpeedThrills said

Speaking of that, I used to repair air cooled small engines. Mice love nesting under the cooling shrouds. The nesting then overheats the engine, sometimes loosening exhaust valve seats (no compression, as valve can't close), or blowing head gaskets (OHV B&S, some Kohlers).

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Since moving to the country, I have to keep on top of checking this stuff. I used to live-trap the little buggers (mice) and release them a ways away........Until I found the start of a nest in the intake runner of my numbers 340. Happy there was no damage as I caught it super early. Bought a dozen snap traps and set them all. Had a lot more mice in the garage than I would ever have guessed.