How to Fix a Faucet Sprayer That Won't Spray (4 Common Causes)

TL;DR: A kitchen faucet sprayer stops working when mineral deposits clog the aerator (most common), the diverter valve sticks, the hose kinks or leaks, or the spray head clogs internally. Most fixes take 15-30 minutes and require only vinegar, a wrench, and a flashlight.

_Last reviewed: July 2026 · 6 min read_

A dead sprayer turns rinsing dishes into a chore. You pull the trigger, nothing happens—or you get a weak dribble instead of a strong jet. The cause is almost always a blockage or a stuck valve, not a broken part.

Okoniq Property Hub logs each faucet repair with photos and parts replaced, so you can track which fixtures need attention and show tenants or buyers you've maintained the plumbing.

Is the aerator or spray head clogged with mineral deposits?

The aerator—the mesh screen at the tip of the spray head—traps sediment and hard-water scale. When calcium and lime build up, water flow drops to a trickle or stops entirely. Remove the spray head by turning the collar counterclockwise (use a rag for grip if it's tight). Unscrew the small aerator screen inside the nozzle. Rinse it under running water, then soak it in white vinegar for 20 minutes. Use a toothpick to clear any stubborn holes. Reassemble and test. If flow returns, you've solved it.

If mineral buildup is a recurring problem, soak the entire spray head in vinegar every six months. In areas with very hard water (over 180 mg/L dissolved minerals), consider installing an under-sink water softener or replacing aerators annually. The same mineral deposits that clog spray heads also accumulate inside AC condensate drain lines, so if you see scale on faucets, check your HVAC drains too.

Is the diverter valve stuck or worn?

The diverter valve sits inside the faucet body at the base of the spout. When you press the sprayer trigger, the valve redirects water from the main spout to the hose. If the valve sticks open or wears out, water flows weakly or not at all. Turn off the water supply valves under the sink. Remove the spout by loosening the collar or setscrew (consult your faucet manual—Delta, Moen, and Kohler designs vary). Pull out the small plastic or brass diverter valve. Rinse it, check the rubber O-rings for cracks, and clear any debris from the valve seat. If the O-rings are flat or torn, replace them (universal sizes available at hardware stores for under $2).

Diverter valves rarely fail outright—they just get gummed up with sediment. If yours is over ten years old and brittle, replace the entire diverter assembly ($8-$15). Reinstall, reconnect the water, and test. This fix takes 20 minutes and prevents a service call. If you're comfortable with faucet teardowns, you can also tackle ceiling water stain diagnosis or clogged drain issues with the same methodical approach.

Is the hose kinked, punctured, or disconnected?

Open the cabinet under the sink and pull out the spray hose while someone holds the spray head above. Look for kinks, especially where the hose passes through tight spots or wraps around the shut-off valves. A sharp bend can block flow entirely. Straighten it, then test. Check for pinhole leaks—spray patterns change if water escapes mid-hose. Run your hand along the hose with a paper towel to catch drips.

Inspect both connection points: where the hose screws into the faucet base and where it attaches to the spray head. Hand-tighten plus a quarter-turn with a wrench—overtightening cracks the plastic threads. If the hose is damaged or the fittings leak, replace the hose ($12-$25 depending on length and brand). Measure the old hose before buying; standard kitchen sprayer hoses are 54-60 inches. When routing the new hose, avoid sharp bends and keep it away from the garbage disposal and hot water lines. This is similar to the troubleshooting mindset you'd use for basement waterproofing—find the path of least resistance for the problem.

Is the spray head itself blocked internally?

If the aerator is clean, the diverter works, and the hose is intact but the sprayer still won't spray, the spray head's internal passages may be clogged. Unscrew the spray head from the hose (turn the coupling nut counterclockwise). Submerge the entire head in a bowl of white vinegar for 30 minutes. Shake it gently, then flush it under full-pressure tap water. Look inside the coupling—sometimes a small filter screen sits there. Remove it, rinse it, and reinstall.

If vinegar doesn't restore flow, the spray head may have a cracked internal diverter or a collapsed check valve. Replacement spray heads run $15-$40 and install in under five minutes. Match the finish (chrome, stainless, bronze) and connection type (most are universal threaded, but some brands use proprietary quick-connects). Bring the old head to the store or check your faucet's model number online. Upgrading to a multi-function spray head (stream, spray, pause) costs $5-$10 more and adds flexibility.

Should you replace the entire faucet?

If none of the above fixes work and your faucet is over 15 years old, replacement may be more cost-effective than chasing parts. Faucet technology has improved—modern ceramic-disc valves last longer than old compression fittings, and pull-down sprayers integrate the spray head into the spout, eliminating the separate hose. A mid-range single-handle pull-down faucet costs $80-$150 and installs in 60-90 minutes if you're handy.

Before buying, confirm your sink has the right number of mounting holes (1-hole, 3-hole, or 4-hole) and measure the existing faucet's reach and height to ensure the new one won't splash outside the sink. If you're upgrading, choose a model with a lifetime warranty (Delta and Moen both offer this). Keep the receipt and register the product—many manufacturers send free replacement parts for the life of the faucet. Document the install in Okoniq so you have a record of the make, model, and purchase date for warranty claims.

FAQ

How often should I clean my kitchen faucet aerator?

Every six months in areas with hard water (over 120 mg/L dissolved minerals), or once a year if you have soft water or a whole-house filter. If you notice reduced flow before six months, clean it immediately—waiting makes the buildup harder to remove.

Can I use CLR or Lime-Away instead of vinegar?

Yes, but dilute CLR 1:1 with water and limit soak time to 10 minutes—it's more aggressive than vinegar and can damage rubber O-rings or plastic parts if left too long. Vinegar is safer for prolonged soaks and works just as well for most mineral deposits.

Why does my sprayer work but the main faucet doesn't?

The diverter valve is stuck in the "spray" position, sending all water to the hose. Turn off the water, remove the spout, and clean or replace the diverter valve. This is the opposite failure mode of a sprayer that won't work—same part, different symptom.

How do I know if my spray hose needs replacing?

Visible cracks, pinhole leaks, stiff or brittle rubber, or constant dripping at either connection point all signal replacement. If the hose is over ten years old and you're already troubleshooting spray issues, replace it preemptively—it's cheap insurance.

Will a plumber charge a lot to fix this?

Most plumbers charge a service-call minimum of $100-$150, then $50-$100/hour. If the fix is just cleaning an aerator or replacing a diverter valve, you'll pay for an hour even though it takes 20 minutes. DIY first—you'll save the call-out fee and learn your fixture for future maintenance.

This is educational information, not plumbing or warranty advice. If you're unsure about disassembling your faucet or if the fixture is still under warranty, consult the manufacturer or a licensed plumber before proceeding.