How do you break rusted fuel line connections to the fuel filter on a 2000 Silverado if soaking with Quikrelease did not work?

Answer 1

You need to use a quality flare nut wrench. A flare nut wrench allows you to apply torque to all six sides of the hex while holding the other end with a larger wrench. Good luck, I hope this helps you. Mark Also try using vise grips Unless you're prepared to replace the entire fuel line - take it to a garage and have a pro do it because it twists VERY easily. There are special wrenches called "line wrenches" that you can try, but be very careful! If the line twists, especially if you already have rust, the lines could be compromised and then you're in deep. Backyard repair specialists (and I'm one of them) will think about using compression fittings in the event of a fuel line cut/replacment - DO NOT DO THIS! The line holds upto 75 psi...it will (eventually) leak and you don't need high-pressurized fuel squirting that close to the exhaust and/or engine. This is one of those times that it is better to be safe than sorry. Good luck