I installed a rebuilt carburetor from www.carburetorcenter.com into my 1967 Eldorado today. It suffered from bad idle when fully warmed up at low RPM. It had a problem with the secondaries not closing properly and was worn out a bit. It's an easy install. The 1967 Eldorado uses a unique linkage for the transmission switch, which is a one year only item. Take good care of yours!
The Eldorado now purrs like a kitten again with its new Quadrajet. I now have two more carburetors to do - the 1966 has a stuck choke and the 1978 needs a new accelerator pump.... The video is also available on YouTube in 4K HDR quality...

I took a short video of the installation process.
The rebuilt Quadrajet on the bench.

The old original 1967 Eldorado Quadrajet - this is the non California version.

The rebuilt Quadrajet installed.

Tags:1967 Cadillac Eldorado Repair Tip, 1967 Eldorado, 1967, Eldorado, Carburetor, Quadrajet