Do you mean piston slap? Noise like piston slap are repairable only by an engine rebuild.
are you sure is a valve noise?? or is a piston slap?
Slap it around
With a new valve gasket
Remove the head and have the valve reseated or replaced.
The only way to fix piston slap is to replace them. Some oil additives will quiet them down some, there are several brands available.
The car code p0446 is a faulty vent valve. To fix this problem, the vent valve will need to be replaced.
Your pressure relief valve may be leaking due to high pressure in the system or a faulty valve. To fix it, you can try adjusting the pressure settings or replacing the valve if it is damaged.
Replace the valve seal and check the valve guide for wear.
Yes, it is possible to fix a bent Presta valve by carefully straightening it using a valve tool or pliers. However, if the valve is severely damaged, it may need to be replaced.
To fix a leaking pressure relief valve, you can try tightening the valve or replacing the valve if it is damaged. It is important to turn off the water supply and release any pressure before attempting to fix the valve. If the issue persists, it may be best to consult a professional plumber for further assistance.
You don't fix it, you replace it.
A shut off valve can get stuck due to mineral buildup or corrosion. To fix it, try lubricating the valve with WD-40 or vinegar. If that doesn't work, you may need to replace the valve.