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Triple Jim · September 30th, 2017, 05:24 PM

Disconnect the petcock output line and hold a cup under it. Then suck on the vacuum line to the petcock and see if fuel flows. It doesn't take much suction to open it if it's working right.

September 30th, 2017, 05:24 PM	#22
Triple Jim Guy Who Enjoys Riding Name: Jim Location: North Carolina Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot. MOTM - Oct '18, Aug '17, Aug '16	Disconnect the petcock output line and hold a cup under it. Then suck on the vacuum line to the petcock and see if fuel flows. It doesn't take much suction to open it if it's working right.