WebMar 6, 2012 · The carb butterflies would be closed at idle. If they were open to horozontal, your engine would be idleing somewhere in the region of 5500-6000 RPM. The choke butterfly is the one that you can easily see, and when the choke is engages, it closes with the solenoid. Have you taken off the 'air filters' at the front of the carbs? WebWhen the choke butterfly is allowing the most air flow, without restriction, it is open. Like a door. Open lets things through. when the choke is restricting the flow of air, it is closed. …
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WebWhen the engine is off, the choke plate (top butterfly) should be open. (However you should close and open the butterfly by hand just to see if it moves freely) Once the engine cools … WebJun 10, 2012 · This is after the benchsync: Open or closed or slightly closed and if slightly closed then what is the measurement of the gap. The answer again is that the butterflys should be open the thickness of a piece of paper. If they all are and everything else has been checked then it should idle around 1100 rpm. blurry shoe pfp
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WebDec 20, 2011 · The choke should be closed when the motor is cold. When you turn the key the “heater” in the choke is energized and in about a minute the choke butterfly should start to open. There is an adjustment on the housing of the choke. Basically if it opens up in about a minute it is working properly. ... This then causes the choke to open up. WebJul 8, 2007 · Then, even stranger with in 20-30 seconds the butterfly cracks open to close full while the fast idle cam continues for 2-3 minutes. Is this normal? I cut my teeth on Q-jet mechanical chokes that stay closed much longer and seemed to only be controlled by rotating the cover on the choke housing. WebNov 12, 2010 · When your engine is COLD, the butterfly choke will be closed, as soon as you press START, power is applied to the Electric Choke COIL. As the engine runs,,the choke coil gets hotter and hotter,,and slowly, the choke plate will reach it full OPEN position, as the engine warms up. There are many ways to operate the Choke Butterfly plate. blurry shape