I've got a bit of a fuel leak on the 914 that I think are a result of degraded lines between the filler neck/tank/expansion tank. I'll be replacing those tonight, and if that's not the case, then it looks like I may be pulling the tank to replace the tunnel fuel lines with another material (SS or mild steel) as some "preventative maintenance".

All signs point to being easier while the engine's out. And since I'll be dropping the engine, I might as well clean up and take a closer look at the battery tray, which has some surface rust, but looks fairly solid.

I have a bad feeling of where this all may lead me. Need a repaint too. Thankfully, I'm almost broke, so I can't, or shouldn't take it too far apart. Or if I do, I need to get the Aerocoupe together again first...

DWS was it now?

Replacing the under tank lines with rubber is plenty good enough. They'll last a long time (decades) if you use decent quality stuff.

The center tunnel lines are best replaced with stainless tube of the like, esp. if you still have the original plastic lines. Pulling the engine does substantially ease doing this, but you can do it with the engine in place. See Clay's tech article on this topic. Lots of good info there.

You might as well replace ALL of the fuel lines while you're doing this, including all of the lines in the engine bay.

The first issue I had coming back from LA with the fuel pump relay (which should be there for a 1.8 as Clay pointed out) I was trying to determine fuel pressure. I was afraid to put much effort on the getting the rubber hoses off the plastic lines in fear of breaking something that could be a big issue. SS would certainly add some assurance in that aspect.

Lapuwali is right SS is the way to go, water in fuel will rust mild steel in time.