This could happen if there is debris in the faucet or water supply lines, or the diverter assembly could be malfunctioning.
Turn off the water supplies.
Disassemble and remove all internal faucet components.
Place and hold an upside-down bucket over the faucet to deflect water into the sink.
Carefully turn water supply on and let run one minute.
Turn water supply off.
Reassemble the faucet.
Turn water supply on.
It will need to be replaced. To determine the part number for your faucet model, contact your Delta plumber or showroom, call 1-800-345-DELTA (3358) or e-mail us.
There may be debris caught between the wand and the hose. To check for debris:
The pull-out uses a side-to-side diverter to change spray patterns. Make sure the diverter is pushed all the way to one side or the other to avoid a mixed spray/stream pattern.
The hose for the pull-out faucet is flexible. Make sure it isn't caught on something underneath the sink.
The old support assembly is not large enough for the Quick Connect to pass through. Along with a new Quick Connect hose, you will need a new support assembly that has been enlarged to accommodate the new QC fittings. The new part number for that is RP6015.
