3 if single handle faucet then broken innards could also cause this like a broken ball which is connected to the handle and controls the water mix letting hot water into the flow path at all settings or a torn internal seal letting hot water to the outlet whenever the faucet is turned on.
Single handle sink faucet no hot water.
This little valve became loose and was blocking water flow intermittently.
The faucet is probably a single handle cartridge faucet and the hot water port in the cartridge is probably blocked.
This will force the cold water backwards down the hot inlet and perhaps dislodge and flush what is plugging it up.
Shut off valve inside of my quick release attachment under sink.
With this issue you may experience a lower flow of hot and cold water from the faucet than had occurred previously or a lower flow of hot or cold water.
A good strategy for diagnosing low hot water flow is to begin looking for.
This troubleshooting document relates to single handle kitchen faucets or single handle kitchen faucets with a pull out or pull down sprayhead.
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Single handle faucets can have either a cartridge or ball valve and both types of valves have ports that can get blocked.
Turn off both shut off valves under the sink and remove the faucet handle with.
Put a bucket under the open end of the faucet s hot water inlet.