so im new to c bodies.... but i love them. i have a 1974 ny'er 440 4 door sedan with white vinyl top... itll start up super smooth and normal, but soon after itll start to run really rough and super rish... so rich that its puffing black smoke out the pipe... is my choke staying on? or something else?
'74 new yorker brougham 440 4bbl help!!
- Thread starter tex74'440
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commando1
Old Man with a Hat
Welcome to FCBO.
Glad you found us and you came to the right place.
That being said..........
How many miles on that tired ol engine.
And yes, start with the carburetor in general. Most likely time for a rebuild/replacement. Then you move on from there.
PIS! We love pics here.
Glad you found us and you came to the right place.
That being said..........
How many miles on that tired ol engine.
And yes, start with the carburetor in general. Most likely time for a rebuild/replacement. Then you move on from there.
PIS! We love pics here.
Welcome aboard!
:sFl_america2:
:sFl_america2:
mdh157
Senior Member
my $$ is on the carb as well..........
commando1
Old Man with a Hat
32k miles! Wow. I really want to see pics now.
commando1
Old Man with a Hat
My bet is on the choke pull off no longer working due to:
a) Vacuum line not being hooked up (may have bee knocked off, or cracked/ deteriorated) of not hooked up properly (to incorrect vacuum source, not allowing proper operation).
b) Diaphragm inside choke pull off cracked deteriorated. leading to same symptoms.
I had the air cleaner off my 74 once and had knocked off the line by accident, same symptoms you described. After I found the problem I felt really dumb, reconnected the line and have been fine since.
a) Vacuum line not being hooked up (may have bee knocked off, or cracked/ deteriorated) of not hooked up properly (to incorrect vacuum source, not allowing proper operation).
b) Diaphragm inside choke pull off cracked deteriorated. leading to same symptoms.
I had the air cleaner off my 74 once and had knocked off the line by accident, same symptoms you described. After I found the problem I felt really dumb, reconnected the line and have been fine since.
65Fury440
Senior Member
Start it up and take the top off the air cleaner, the answer lies within. Welcome to the board.
moper
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32K miles? Why not rebuild the original carb? It's probably a Thermoquad and everything has dried out or been eaten by the ethanol in the gasoline we have now...
commando1
Old Man with a Hat
Fratzog
Old Man with a Hat
She's a beauty! More pics of interior and under the hood would be nice. A pic of the carb should help the techies here help you.
Speed_Kills96
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Floats mabye?
moper
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Many times with the Thermoquads it's leaky seals between the top casting and the phenolic body. That and just crudding up and gumming up the secondary air door.
70bigblockdodge
Old Man with a Hat
That's nice looking New Yorker, great find, if you do rebuild card and it is a thermoquad change the floats also or at least weigh them stuff soaks into plastic and they get heavy, causing bowls to full stalling etc. Your problem should be in choke system as everyone else already said. WELCOME
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