Drained a fuel tank wrong in Reno, now I'm split on the right call

I was parked behind a truck stop in Reno last month, pulling a bad fuel pump on an older Pete, and cracked the drain valve thinking it was dry, so I caught a face full of diesel before I could reroute the hose. Burned through three pairs of gloves and took the whole afternoon, which got me wondering: is it smarter to always let gravity win and risk the mess, or do you guys use a vacuum setup and eat the extra setup time every single job? What's your move when you're halfway in and know the tank wasn't as empty as the gauge said?

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owens.ben26d ago

Pulling the drain valve is how you're supposed to empty it, that part isn't the mistake. Where guys get in trouble is trusting the gauge to tell them the level, because a gauge reading empty just means the float is sitting in whatever's left down there, and a bad pump job on an older Pete means you probably had thirty or forty gallons still sloshing around in that saddle. A drain valve is a steady stream, not a surprise, so if you crack it slow with a pan under it you'll see what's coming before it's on your face. The vacuum rig is nice for keeping things clean but it does not save you time unless you're doing it every day, and it still won't help if you skip the part where you actually check the tank first. Next time stick a clean stick or a piece of hose down the filler and look before you touch anything, it takes ten seconds and saves the afternoon.

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