Spent 6 hours chasing a phantom hydraulic leak on a Cessna 172. Turned out to be a cracked O-ring on the reservoir cap vent line. | Aircraft Mechanics - Opinions Matter
Those tiny O-rings can cause such a huge headache. I mean, you check all the big stuff first and it's something stupid like a 50 cent part. Makes you want to just replace every seal on the plane sometimes.
Ugh, tell me about it. I spent a whole weekend tracing a leak in my truck's AC, only to find it was a dried up two dollar seal. Felt like such a clown for overthinking it. Now I just buy those little parts in bulk out of pure spite.
Tell me about it. Feels like the universe picks the cheapest part to fail just to mess with you. Might as well start every job with a bucket of new seals.