My 383 has an Edelbrock 1407 carb atop it that I just rebuilt. The car runs great, but it will not cold start for nothin. I do have the choke disconnected, but when it is 85 degrees outside a choke is uneccessary. When I go to crank the car it isn't getting gas. The fuel pump is new and makes good pressure. It seems as if the bowls aren't filling up. Whenever I pour some gas straight into the carb the car always fires right up. I just don't understand why I am not getting any gas into the carb.
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Fuel System: Edelbrock carb cold starting issue.
Alex Nelsen, certified Studebaker nut.
Driving a 1954 Champion Coupe powered by a Chrysler 383.
Lizella, GATags: None
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You are experiencing the same problem as the rest of us. The fuel in the carb bowl evaporates as it is open to the atmosphere and it takes some cranking to get it filled again. Hence the immediate start when you manually prime the carb. Electric fuel pumps help this problem.Frank van Doorn
Omaha, Ne.
1962 GT Hawk 289 4 speed
1941 Champion streetrod, R-2 Powered, GM 200-4R trans.
1952 V-8 232 Commander State "Starliner" hardtop OD
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A properly adjusted choke works 24-7 365......
And your car will start better at 85 degree's with one.
Try this.
Crank the engine 3 of 4 seconds.
Push the gas pedal to the floor and hold it there for a couple of seconds.
Let up completely on the gas pedal.
Crank it to start.
I have found that a couple seconds of cranking allows some fuel to get pumped into the carb.
Then, a push and hold allows fuel to run into the intake (more than a pump-pump-pump)...
Then, a full closed throttle shaft makes for a higher intake vacuum to better allow fuel to be pushed into the carb venturis.
(Remember Bernoulli's Principle?)
Always doubt your fuel pump with today's fuel.. Check your fuel pump pressure and flow.
HTIH
Jeff
Originally posted by Nelsen Motorsports View Post<snip>
, but when it is 85 degrees outside a choke is unnecessary.
<snip>HTIH (Hope The Info Helps)
Jeff
Get your facts first, and then you can distort them as much as you please. Mark Twain
Note: SDC# 070190 (and earlier...)
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Modern gas (the last 10 years or so) is formulated for highly pressurized systems for fuel injection.
Open to the atmosphere fuel bowls will allow the low vapor point fuel to boil away, leaving the fuel bowls dry.
Insulating the base of the carb helps some. Adding an electric fuel pump to prime the carb before starting helps the most.
Barring installing an electric pump, crank the engine for a few seconds and then floor the gas pedal two or three times. Then it "should" start.
I started my Avanti here in Columbus all last summer using that method, and I didn't have an electric fuel pump.Bez Auto Alchemy
573-318-8948
http://bezautoalchemy.com
"Don't believe every internet quote" Abe Lincoln
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Within a few rotations of the engine I have 7 psi of pressure in the line so the pump works, I have an in-line gauge. My dad's 70 T/A has a quadrajet with the choke taken off for drag racing and it will crank right up after months of sitting.Alex Nelsen, certified Studebaker nut.
Driving a 1954 Champion Coupe powered by a Chrysler 383.
Lizella, GA
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You might need to go ahead and take the top off of the carb. Much can be revealed by doing that. Maybe an obstruction
at the needle and seat , maybe low float level, maybe weak accelerator pump etc.
Edelbrocks are easy to do on the car. Slow and easy does it. No need to remove the carb itself . No fuel spill as in a Holley.
Here is a good video starting point It's in a series of vids by Edelbrock. http://www.youtube.com/watch?v=OI_DS...eature=related
There will be a bunch more on the right , including the rebuild one .Last edited by shifter4; 10-05-2011, 03:48 PM.Bill H
Daytona Beach
SDC member since 1970
Owner of The Skeeter Hawk .
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I just tried holding the pedal down for a few seconds to fill the bowl instead of pumping the pedal, the car cranked up and then died. I think that is a start, but my battery died so I am done for the night.Alex Nelsen, certified Studebaker nut.
Driving a 1954 Champion Coupe powered by a Chrysler 383.
Lizella, GA
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Originally posted by Nelsen Motorsports View PostWithin a few rotations of the engine I have 7 psi of pressure in the line so the pump works, I have an in-line gauge. My dad's 70 T/A has a quadrajet with the choke taken off for drag racing and it will crank right up after months of sitting.
It's this open to the air system that ALL carburetors have that makes running todays fuel so troublesomeBez Auto Alchemy
573-318-8948
http://bezautoalchemy.com
"Don't believe every internet quote" Abe Lincoln
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