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liljoe1996miller@aol 02-16-2013 09:12 PM

350 engine stalls
my 350 engine stalls at lights stop signs and more one day i was driven and it started sputtering and cuts out it has an edelbrock 1406 carb has new sparkplug wires,rotor someone please give me some advice:confused:

poncho62 02-17-2013 05:09 AM

Could be many things....likely the carb need adjusting or has dirt in it

75gmck25 02-17-2013 06:12 AM

Its probably just the carb idle adjustment, but a little more engine information would be useful. A large cam and low vacuum can make idle mixture adjustment more complicated.

If its a relatively stock engine, just follow Edelbrock's directions and get a good idle mixture (2-3 turns out from seated is usually a good starting point). Then adjust the idle speed so it runs about 700-800 rpm while in gear (if its an automatic). That should be high enough to keep it running at a stop light.


vinniekq2 02-26-2013 08:59 PM

welcome to the forum.Maybe delete one of your threads?

cadillacdave1 02-26-2013 10:07 PM

Check the carb float. It could be going bad and filling with gas and causing the motor to sputter and flood at red lights. While driving at speed it would be less noticeable.

liljoe1996miller@aol 02-27-2013 05:21 AM

how do you change idle fuel pressure to 5psi

75gmck25 02-27-2013 05:55 AM

They sell fuel pressure regulators at most parts stores, including the Edelbrock brand I think. Edelbrock documentation emphasizes the possibility of carburetor problems if you don't keep the pressure within recommended limits. A vacuum/fuel pressure gauge is very cheap, so you might want to check the pressure before you replace any parts.

With a stock mechanical pump you usually don't need a regulator because it will run at about 5 psi, but a regulator is used very frequently with electric pumps that put out more pressure.


bigdog7373 02-27-2013 10:47 AM

I have a similar setup and was having the same problem. First make sure your idle mixture is adjusted correctly. It's very easy to do.
Check your timing without vacuum advance plugged in.
Set your idle speed. What's it currently at in park and in gear?
You may need a regulator. I have a mech pump and i still use one.

liljoe1996miller@aol 02-27-2013 12:00 PM

What iS your fuel presurre with the regulator?

bigdog7373 02-27-2013 12:26 PM

5 psi. Edelbrocks are very sensitive to fuel pressure.

liljoe1996miller@aol 02-27-2013 02:55 PM

I was thinking i need a new fuel pump but the fuel bowl is filling up,so will it be wiser to try feul reglator before new fuel pump?

bigdog7373 02-27-2013 03:29 PM

You can check the pump by installing a pressure gauge and taping it to the cowl and watching while you drive.
Since your problem happens at idle then I highly doubt there's anything wrong with the pump. Its almost 100% positive that its carb related. Either not enough fuel or too much. Do what I said to do in my fist response and let us know what happens. It should clear up the stalling as a poorly adjusted carb or timing in the cause of this problem most of the time.

liljoe1996miller@aol 03-01-2013 04:03 PM

hey guys today i hooked up my brakebooster and my brakes got very hard to press down to the floor and car tryed to stall what can be the problem:confused:

bigdog7373 03-01-2013 05:04 PM


Originally Posted by liljoe1996miller@aol (Post 1652239)
hey guys today i hooked up my brakebooster and my brakes got very hard to press down to the floor and car tryed to stall what can be the problem:confused:

Wait you hooked it up or unhooked it? It tries to stall no matter is the booster is hooked up or not?

liljoe1996miller@aol 03-01-2013 06:36 PM

The booster is hooked up

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