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Classic Goldwing Technical Forums
Engine & Fuel System Modifications
Langdons 32/32 leaking float valve.
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<blockquote data-quote="ekvh" data-source="post: 142030" data-attributes="member: 1179"><p>I haven't experience with these, but am messing with one and reading all I can about them. If you google drilling a hole in throttle plate, you'll find it is quite common. The info I read as far as the dft, dgv carbs is that you don't want to turn the idle screw out more than two turns.mid more than two turns, go down an idle jet size or drill a hole. If you go more than two turns the plate lifts enough to bring in the primary circuit. If you are two turns or less, but still rich, you need it leaned out. This hole will allow a tad more air without activating the primary circuit.</p><p></p><p>I also found this info dealing with bigger carbs than ours, but the principle is probably the same. This is in regards to the power valve: " If the engine seems to be running rich at idle and the idle mixture screws aren’t clearing it up, there are a couple of things to check. The first is the power or enrichment valve. This valve is a gateway from the fuel bowl into the main circuit. It’s opened when the vacuum drops to the number stamped on the valve under acceleration. However, if vacuum at idle is lower than the vacuum rating stamped on the valve, it will add fuel to the mix when you don’t want it. The rule of thumb is to use the power valve that opens at half the idle reading. For example, an engine with 10 in-Hg (inches of mercury) idle will call for a 5.0 power valve. ches of mercury) idle will call for a 5.0 power valve. If the engine makes 12 in-Hg at idle or more, the 6.5 valve that comes in most carburetors will be sufficient." This would be a factor in the 32/36 or others with a power valve.</p></blockquote><p></p>
[QUOTE="ekvh, post: 142030, member: 1179"] I haven't experience with these, but am messing with one and reading all I can about them. If you google drilling a hole in throttle plate, you'll find it is quite common. The info I read as far as the dft, dgv carbs is that you don't want to turn the idle screw out more than two turns.mid more than two turns, go down an idle jet size or drill a hole. If you go more than two turns the plate lifts enough to bring in the primary circuit. If you are two turns or less, but still rich, you need it leaned out. This hole will allow a tad more air without activating the primary circuit. I also found this info dealing with bigger carbs than ours, but the principle is probably the same. This is in regards to the power valve: " If the engine seems to be running rich at idle and the idle mixture screws aren’t clearing it up, there are a couple of things to check. The first is the power or enrichment valve. This valve is a gateway from the fuel bowl into the main circuit. It’s opened when the vacuum drops to the number stamped on the valve under acceleration. However, if vacuum at idle is lower than the vacuum rating stamped on the valve, it will add fuel to the mix when you don’t want it. The rule of thumb is to use the power valve that opens at half the idle reading. For example, an engine with 10 in-Hg (inches of mercury) idle will call for a 5.0 power valve. ches of mercury) idle will call for a 5.0 power valve. If the engine makes 12 in-Hg at idle or more, the 6.5 valve that comes in most carburetors will be sufficient." This would be a factor in the 32/36 or others with a power valve. [/QUOTE]
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Classic Goldwing Technical Forums
Engine & Fuel System Modifications
Langdons 32/32 leaking float valve.
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