Sounds like a proper diagnosis. I had an '83 Seville with a similar problem.
Now, here's your choices:
The 4100 is a fragile engine, do it wrong, and it'll be dead.
Cadillac have an upgrade for this intake that they state will solve the problem. It's not that cheap, if still available.
There is a lot of disassembly to this repair, as Cadillac chose to mount near everything on the intake.
You could choose to have a neighborhood hack do the repair, or a proper ASE mechanic who will back the repair.
I work at a dealership (not Cad.) and see a lot of stuff everyday that people tried to repair. It then costs more ($130/hr) to put it right. Your choice: pay once, or pay more twice.
My favorite: "I took it apart and it still doesn't work!" Actually stated by a customer.
T'were me, i'd fix it and get rid of it. From my experience, the 4100 is best as a boat anchor, and even then it's too light...
Cosmo
Now, here's your choices:
The 4100 is a fragile engine, do it wrong, and it'll be dead.
Cadillac have an upgrade for this intake that they state will solve the problem. It's not that cheap, if still available.
There is a lot of disassembly to this repair, as Cadillac chose to mount near everything on the intake.
You could choose to have a neighborhood hack do the repair, or a proper ASE mechanic who will back the repair.
I work at a dealership (not Cad.) and see a lot of stuff everyday that people tried to repair. It then costs more ($130/hr) to put it right. Your choice: pay once, or pay more twice.
My favorite: "I took it apart and it still doesn't work!" Actually stated by a customer.
T'were me, i'd fix it and get rid of it. From my experience, the 4100 is best as a boat anchor, and even then it's too light...
Cosmo