I finally got back to working on my big brother's Interceptor... tried a few more times to start her last week and she came back to life! She would idle only with full choke even after warming up- one of many great things my brother did was to drain the float bowls. The way it acts the slow speed jets must plugged so pulling them and doing a thorough clean and fresh seals is in progress, as I pulled things apart it was clear the slow speed jets were indeed clogged.
The slow speed jets are a strange configuration, not just a straight through orifice. even after multiple cycles in the ultrasonic cleaner there was one that will not clear, new jets and seals should be here today!
She's very VERY close to being out on the road again after 25 years of sitting in a garage.
I'm sorry to say my Brother passed away late in August, I sure wish I could share the excitement with him...
It was a rough 2020.