This is usually caused by either a plugged siphon line or if you are using the high pressure tips (red, yellow, white or green) on the wand. Check that the siphon line doesn't have any debris or bugs in it. The only way the siphon hose will work is if you use the low pressure, black soap tip on the end of the wand. The other tips cause too much back pressure for the cleaning solutions to be picked up by the hose.
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This is usually caused by either a plugged siphon line or if you are using the high pressure tips (red, yellow, white or green) on the wand. Check that the siphon line doesn't have any debris or bugs in it. The only way the siphon hose will work is if you use the low pressure, black soap tip on the end of the wand. The other tips cause too much back pressure for the cleaning solutions to be picked up by the hose.