Title says it all. I was trying to change my old fuel filter, and after dousing it with WD-40 a couple times a day for a week, it turned a little bit. Unfortunately, the metal fuel line also turned, putting a noticeable twist in it. That'* where I stopped.

While Advance and AutoZone apparently do not rent fuel pressure testers, the line pressure seems to be enough to redline it.

It'* not leaking or dripping, and driveability doesn't seem to be affected. Should I just call myself lucky, take a nap, and figure out some other way of getting the filter off?

Consider yourself lucky. The line is compromised though, and you should consider replacing it.

Spoke too soon. The engine will occasionally misfire and usually set the P0300 code. It'* only when getting on the highway or on hills, before and just after the engine is up to temperature. After the first ten minutes or so of driving, it'* fine, even if I drive all day and make multiple stops. (Weird.)

Has anyone had experience replacing fuel rails? Do they come premade, or is this a "roll your own" job?

You mean fuel lines correct? Fuel rail is on top of your engine that feeds the fuel injectors.

Nope, its all custom. You can buy the rigid line at Autozone, by the foot or in sections with fittings already attached. If bends are needed, you can probably get away using a cheap brake line bender. But last I knew, from the fuel filter, its only rigid to just about the bottom of the engine bay, then converts over to flex line. Which is fairly straight. But because your working right next to the rigid return line, it may become compromised while working on the fuel line. Might as well replace that one too while your at it.

Yes, I meant to say fuel line. They're in good condition, so I plan on taking care of just the damaged portion unless something catches my eye.

In the future, should I use anti-seize on the fuel filter? (Valvoline apparently did not, or else I'd be happier.)

fuel lines do this naturally. This is when you hold the line still and spin the filter. You can replace a chunk of line with high pressure fittings and a piece of line.

WD is worthless! Always, Always use PB Blaster for soaking stuck connections.

Okay, I'm looking at the Dorman 800-153 fuel line repair kit. How would I install this? I imagine some special tool is needed.

Does Dorman have any instructions for it?

None that I can find online.

I imagine I just cut off the damaged part of the line and splice this in, although, like open heart surgery, there'* probably some technique involved.