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My carbureted Chevy 350 stumbles/feels like a random misfire when accelerating and cruising. The catch though is that it only does this once the engine is fully warmed up. My train of thought says that if it's fine when it's cold, and has problems when it's hot, it's getting too much fuel. Any thoughts? Carb is Edelbrock 1405 600 cfm man. choke.
 

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One inexpensive answer may be to replace your distributor cap, rotor and plug wires. Yes, all three items. Check your initial timing.
 

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Try changing the accelerator pump stroke notice there are 3 holes in the pump arm I rebuilt a Carb for a guy and he had the same issue and that cured it,in another case a guy bought a 1405 manual choke he changed the metering rods to the ones used in a 1406 the bog went away and his mileage gained 2 MPG. These are the ones you would want http://www.ebay.com/itm/Edelbrock-1...ash=item21205be3c6:g:V9QAAOSw~AVYoL4G&vxp=mtr O'Reillys may have them also. Tech information here: http://www.edelbrock.com/automotive/misc/tech-center/dl/carb-owners-manual.pdf
 
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