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.
It all depends how the tuba valve is broken.
The car code p0446 is a faulty vent valve. To fix this problem, the vent valve will need to be replaced.
Replace the valve seal and check the valve guide for wear.
The only way to fix piston slap is to replace them. Some oil additives will quiet them down some, there are several brands available.
You don't fix it, you replace it.
slap the dashslap the dash. Seriously that's how I just fixed the one on my 87 4X4 a few minutes ago.
The best way to fix an expansion valve for the A/C system is to replace it. of course then you have to evacuate and recharge with freon.
Go to youtube, search for Davidsfarm, and he shows how to fix a valve.
P1776, solenoid switch valve latched in low/reverse position. The usual cause is dirt in the transmission valve body.
You need to put a vent and a PCV valve in the valve covers.
replace the egr valve
Shut the valve below it
just change it
Replace the EGR valve.
get a new v sleave
Just replace the ballcock valve..
A 1997 Dodge Ram doesn't have a EGR valve.
Put the Bypass Valve back on!
You replace the EGR valve.
Just need a new valve cover gasket. it's an easy fix.
A loose rocker arm for a valve mite be a easy fix with a valve adjustment