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Classic Goldwing Technical Forums
GL1000
GL1000 Weber single carb conversion
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<blockquote data-quote="DuncanV" data-source="post: 199270" data-attributes="member: 5274"><p>Thanks for your input joedrum, I have read it but I am still confused. I took the original 4 carbs off because of crap mpg and put the single Weber on. I have not tried it on the road yet as I cannot get it to run on the slow running circuit of the carb, it will run above 3k just fine but as soon as rpm drops below 3k it can only be kept running by pumping the accelerator injector pump and I can see fuel going down the hole. Surely this means that it needs fuel below 3k. I know opening the flap draws more air in so it does weaken the mixture if it is too rich but adding neat petrol makes it richer again. I have stripped the carb tonight and it is is all clean, the only thing I found was the primary solenoid blank nut was loose but that has made no difference to the problem. I did wonder it the plug was cutting off fuel to the slow running circuit but it is flat ended and seems to leave clearance for fuel to pass to the 3 small holes just inside the venturi. I squirted carb cleaner down the pilot jet hole and saw it come out of the centre of the primary choke so it does not seem blocked. What size pilot jet would, say, double the amount of fuel available to the primary circuit, I don't want to spend a fortune on different jets so I need a ball park estimate. The carb is brand new so I shouldn't expect any internal problems.</p></blockquote><p></p>
[QUOTE="DuncanV, post: 199270, member: 5274"] Thanks for your input joedrum, I have read it but I am still confused. I took the original 4 carbs off because of crap mpg and put the single Weber on. I have not tried it on the road yet as I cannot get it to run on the slow running circuit of the carb, it will run above 3k just fine but as soon as rpm drops below 3k it can only be kept running by pumping the accelerator injector pump and I can see fuel going down the hole. Surely this means that it needs fuel below 3k. I know opening the flap draws more air in so it does weaken the mixture if it is too rich but adding neat petrol makes it richer again. I have stripped the carb tonight and it is is all clean, the only thing I found was the primary solenoid blank nut was loose but that has made no difference to the problem. I did wonder it the plug was cutting off fuel to the slow running circuit but it is flat ended and seems to leave clearance for fuel to pass to the 3 small holes just inside the venturi. I squirted carb cleaner down the pilot jet hole and saw it come out of the centre of the primary choke so it does not seem blocked. What size pilot jet would, say, double the amount of fuel available to the primary circuit, I don't want to spend a fortune on different jets so I need a ball park estimate. The carb is brand new so I shouldn't expect any internal problems. [/QUOTE]
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Classic Goldwing Technical Forums
GL1000
GL1000 Weber single carb conversion
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