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Old Dec 28, 2003 | 09:40 PM
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chris69
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problem

the butterfly on my carb won't stay 100% vertical. it stays about 90% vertical. does this effect the way my truck runs
 
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Old Dec 29, 2003 | 01:11 AM
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bubbaf250
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Are you referring to the choke plate at the top of the choke tower?

If it won't open all the way when the engine is warmed up, you need to adjust the choke thermostat. To make it open farther, loosen the three screws that secure the thermostat housing and rotate the housing clockwise. Rotate it just far enough to open the choke completely with the engine warmed up to normal operating temp.
 
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