How to Fix Stuck Faucet Stems
Struggling with stuck faucet stems after replacing seats and springs? Learn why stems won’t depress and how to get your old faucet working again.
Fixing a dripping faucet can turn into a bigger challenge than expected. Many homeowners find that after replacing seats and springs, the faucet stems no longer depress. This can make both hot and cold handles impossible to operate.
In this situation, a two-handle faucet about 25 years old was leaking. After removing the hot insert, replacing the spring and seat, and reinstalling the insert, the stem would not push down. When the cold side was checked, that stem also stopped moving. Both sides were stuck, leaving the faucet unusable.
Question:
Why won’t my faucet stems depress after replacing the springs and seats, and how can I fix them?
Answer:
Stuck stems usually mean the inserts are misaligned, overtightened, or the springs and seats are not seated correctly. Each stem must be reinstalled carefully so that the flat side aligns with the slot inside the faucet body. If either the seat or spring is crooked, the stem cannot move. Mineral buildup in a 25-year-old faucet can also cause the stems to jam. Try cleaning the valve body with vinegar, reseating the springs and washers, and reinstalling the stems without overtightening. If the stems are worn, replacing them may be necessary.
It’s also important to identify the faucet brand if possible. Replacement stems are often manufacturer-specific. If you cannot identify the brand, take the old parts to a plumbing supply store for help.
For more details, check this Family Handyman guide on dripping faucets. You may also find this Home Depot faucet repair tutorial helpful.
Taking your time with alignment and using new parts instead of reusing old stems will improve your chances of success.
I’m Chris Mayer, writing for Plumbing 101.
