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I recently picked up a 2015 570 that needed a tope end rebuild, got everything rebuilt have been chasing a constant issue of keeping the unit running, took it out after the rebuild to get the motor broke in ran for about a hour but started to idle rough then just sputtered out and died, checked the spark plug and it was fouled out running lean, took it home and messed with a bit and noticed the fuel pump would make a high pitched whine when the motor would start and a low gurgle when I couldn't get the motor to start figured might be a power issue and replaced that battery but I'm having the same issue. Anybody know if fuel pumps do this when they are going bad? Checked the vent line to see if it was kinked aswell and have 12v at the fuel pump
 
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