Took 8 hours to find a tiny crack in a fuel line on a Cessna 172

Ngl, I thought it would be a 30 minute job tops. The crack was hidden under a clamp, and I must have checked every other possible leak point before I spotted it. Has anyone else spent way too long hunting down a simple fuel leak?

2 comments

2 Comments

barbarah193d ago

My buddy Dave spent a whole Saturday chasing a fuel smell on his Cherokee. He replaced gascolator gaskets, tightened every hose clamp, even swapped the primer line. Turned out it was a pinhole leak in the fuel selector valve that only showed up when the tank was above half full. He said he nearly pulled the whole panel apart before he finally saw a tiny wet spot on the floor after letting it sit. Sometimes it's the last place you look because you just don't want it to be that part.

kevin_west2d ago

Oh man, that Cessna 172 fuel line crack sounds like a nightmare! Hidden under a clamp is the worst kind of hiding spot. Reminds me of the time I spent three evenings tracking down a slow leak on a Mooney M20. The drip only showed up after the engine was hot and I had already pulled all the cowling and checked every line twice. Turned out it was a hairline crack on the metal fuel line near the firewall, so tiny I had to use a mirror and a flashlight to see it when the engine was running. That kind of thing makes you want to just buy new lines for everything and start over.