Could it be that when they were "diddling" that the choke linkage was somehow disconnected? Maybe there is a vacuum choke pull off that was disconnected in the process. If the choke is stuck closed, rich running and black smoke will result. If it ran great when you left the shop, but crappy and rich in the morning, that would be the first thing I would look at today.
When the car suddenly died, I would not have jumped on the carburetor first. If it ran good for 90 miles, that wouldn't be the first thing that I would decide needed work. As an old car, there are lots of tired systems to consider. When you say "suddenly died" do you mean that it acted like someone turned off the key, or did it sputter out?
In the absence of mechanical failure, most trouble boils down to iginition or fuel. These mimic each other symptomatically. Distinguishing these requires in depth understanding of how they work. The most minute detail can steer you in the right direction. Loose vacuum hoses lead me to wonder how it was truely running before it died, although that would cause a lean condition, not rich. The retro fitted carburetor may mean that you will have to rely on shops to help you that don't really want to spend a lot of time trying to figure out what is wrong with your car. That is unless you are able to tinker (and tinker some more)with it yourself.
Oh, wise ones:
My Imperial frustrates me so! I bought this car in
March. The previous owner bragged about putting a new
Edlebrock carb on this car, at great personal expense,
but he belived that it "needed tweeking". I drove the
car 90 miles home without much problem. I took it to
a carb expert garage that had it running just great.
That is until it died suddenly, and would not start.
Some carb diddling ensued. Different metering rods,
some wimpier spings, a bending of the floats and all
seemed right with the world. Ran great, Until I
started it the next day. Now it is running real rich,
backfiring, and dies occasionally. Cant really drive
it like this. The garage thought that maybe the carb
is too big for the '72. (it is a 75ocfm I think)
Is this possible. Oh, I also noticed that two of the
vacuume hoses that run to the canister located in the
right front are just cut off. This looks like an old
modification. Any thoughts? Oh, I found the old Holly
rusting away in the leaking trunk. Thanks George
Roller.
'72 Lebaron 4 Dr
White with Black Top & Black Leather Int.
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