Ymaha 50 (95 model) misses

B

Benday

Cadet
Joined
Dec 4, 2002
Messages
25
Have cleaned all 3 carbs on htis engine, replaced dacor filter (exterior), cleaned filter screen, opened up set screws, but engine still needs to be choked about every ten seconds to keep running. Have new gas in tank. What next? :confused:
 
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12Footer

Fleet Admiral
Joined
Mar 25, 2001
Messages
8,217
Re: Ymaha 50 (95 model) misses

Remove and rebuild the fuel pump. I'm not familiar with your engine, but the fuel pump may be integrated into the carb, or a stand-alone device. Checck the engine's compression ,as fuel pumps use engine vaccumm to operate them,and
 
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12Footer

Fleet Admiral
Joined
Mar 25, 2001
Messages
8,217
Re: Ymaha 50 (95 model) misses

Remove and rebuild the fuel pump. I'm not familiar with your engine, but the fuel pump may be integrated into the carb, or a stand-alone device. Checck the engine's compression ,as fuel pumps use engine vaccumm to operate them,and also<br />to draw fuel into the engine.<br />Check with hand on the head for heat differences,to determine which cylinder is not getting fuel. If you find one cooler than the other, and you only have one carb, you should suspect an ignition problem instead.
 
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