The driver's side valve cover gasket on my Catalina was leaking. That's an easy fix so I replaced it and it seemed fine until I checked it after a short drive. Replaced it with a slightly thicker gasket requiring longer bolts. That fixed it, until again, after a short drive, it still leaked. The third time I fixed it I had the engine running after to try to discover the exact point of the leak. I was having no luck until my hand brushed against the adjacent power steering pump hose. It started squirting small amounts of power steering fluid onto the lower part of the valve cover. Once I replaced that power steering hose, the valve cover gasket stopped leaking!!! Oh wait! I thought of a worse one. I was working at a Suzuki dealership and purchased a brand new 1975 T500 motorcycle. One evening shortly after I was going to pick up my girlfriend for a ride. The bike wouldn't start. After several attempts, I traced the problem to no spark. I took off the gas tank, got my wiring diagram out and followed the potential source of the no spark condition. After about an hour's worth of work, I traced the problem all the way to the handlebar kill switch. It was in the off position! It is amazing that my girlfriend ultimately married someone so stupid!
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Decades ago I was working at a gas station and someone drove in with an inoperable 8-track. (That long ago!) Worked when I looked at it in the yard with the door open. Stopped when the door was closed! Oh yeah, somehow he had managed to use the interior light as a hot source! Didn't want to pay me to fix it. I suggested he drill a hole in the door so the switch wouldn't compress and take the interior bulb out. I was being sarcastic, but that's what he did. I'm sure the entire electrical system had 10-foot pole marks all over it!
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