I'm in the process of preparing my Lumina's engine and transmission for extraction (progress here).
This 3/8" GM fuel rail is supplied by a flex hose with a "quick-connect" connector. If only it disconnected as quickly...
I ended up using a dedicated (rather pricey) disconnect tool:
Must one purchase a dedicated disconnect tool for this job? I'm already aware of the sacrificial Sharpie lid approach, which strikes me as a bit of a hit-and-miss affair in the video.
What other ingenious solutions do people use for this kind of job? Are there any risks associated with them?