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Old 03-16-2002, 04:08 PM   #1
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I've bought a older but never used Picco engine and the problem I'm having is it always shoots straight to full throttle no matter if the carb is fully closed or not. I've done everything, I checked the tank, changed fuel lines, disassembled the carb and one of the O-rings was cut so I changed that, I put permatex on the carb to make a better seal, I checked all the screws and made sure they were tight. All the thing does is it will idle for a few seconds then shoot to full throttle. I'm at my wits end with this thing!!!
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Old 03-16-2002, 05:57 PM   #2
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If everything is tight and sealed on the engine then the only thing that can be making it go to "full throttle" at idle is an excessively lean mixture on the low end needle. Try backing all the needles out to their break in settings. If the slide of the carb is closed there is just no way possible for the engine to go full throttle without a major airleak, but it may go to a higher RPM.
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Old 03-17-2002, 02:40 AM   #3
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it could only be one thing. it is really lean.

does it sound gluggy? or does it sound zinggy? when idling i mean.
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