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Engine quits then immediately will restart

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Old Oct 22, 2011 | 01:02 PM
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Default Engine quits then immediately will restart

'69 350/300, 4 speed with a recent total rebuild has started dying when accelerating moderately from a standstill. It will then immediately restart either in the normal manner (engaging the starter from ignition switch) or will immediately restart while rolling to a stop while still in gear. It has never failed to immediately restart after going dead but has done it several times before again running normal. Does it at operating temp or cold.

Ideas?
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Old Oct 22, 2011 | 01:32 PM
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What ignition system do you have, points style? Maybe a bare wire in the distributor. Many other possibilities.
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Old Oct 22, 2011 | 03:03 PM
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Kink in rubber fuel line from pump?
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Old Oct 22, 2011 | 03:16 PM
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I'm gonna go with a fuel starvation problem. Maybe a bad "S" hose off the fuel pump, maybe a plugged fuel filter, maybe a collapsed and plugged sock in the tank, maybe your float setting is off. A whole lot of maybe's. Start checking everything from the fuel tank to the Carburetor. Good luck.
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Old Oct 22, 2011 | 03:50 PM
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does it run fine at cruise, say at 60 MPH, or will it just not go over a certain speed?
if so, might be a fuel filter.

float setting might be way off and compensated at idle by a very rich setting on idle screws.

can't imagine engine dying, and coasting to a stop, then engaging the starter to start it again?

I have seen a bad condenser in which the engine idles fine but when put under any load, cause it to stumble and jerk. check your condenser
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Old Oct 22, 2011 | 04:35 PM
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Originally Posted by Duane4238
I'm gonna go with a fuel starvation problem. Maybe a bad "S" hose off the fuel pump, maybe a plugged fuel filter, maybe a collapsed and plugged sock in the tank, maybe your float setting is off. A whole lot of maybe's. Start checking everything from the fuel tank to the Carburetor. Good luck.
Duane
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Old Oct 22, 2011 | 05:23 PM
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With a recent engine install I would look at the wiring to and around the dist , wire from the outside terminal of the solenoid to the coil, the motor will start with out this hooked up but will kill the engine if touches a ground. Also the hose to the fuel pump, bending an old hose could cause it to fail.
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Old Oct 22, 2011 | 05:38 PM
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Fuel filter and rubber hoses would be my 1st check
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Old Oct 22, 2011 | 06:37 PM
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I would check your primary float level, may be way to low
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Old Oct 22, 2011 | 07:59 PM
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Default Have you checked the accelerator pump?

With the engine OFF remove the air cleaner and open the throttle and see if 2 streams of gas are shot into the carb.
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Old Oct 23, 2011 | 01:41 AM
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I'm going with the classic "90% of carb problems are in the ignition" on this one. I had this problem one time many moons ago, the car would start and run until it warmed up, then die. It was the ignition coil needed replacing.
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Old Oct 23, 2011 | 04:58 PM
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Definitely a fuel flow problem. The bowl is emptying faster than gas is coming in. Check everything mentioned above including the pump.
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