Is valve adjustments needed on 2000 camry V6 I am hearing noises that seems like coming from under valve cover, you can hear the noise from inside car,but not from outside of car. I was told this engine does not need valve adj.,unless you have removed camshaft, which I have not.Thank you for help

The procedure is to check the gaps on all the valves then see how much they are out side the recommended gap
remove the camshafts and take the followers off the valve be careful to not lose the adjustment spacer from inside the follower you then measure the spacer to either go thicker or thinner to get the required gap do that with all followers that need adjustment refit camshafts and reset timing then remeasure the valve gaps

Soounds like it to me.... But to be sure, knowing the make, model & year of the car would be a huge help!

Not normally, if they are noisy you can try a heavier oil in the engine.

A 10-40 vrs a 10-30 and change the oil at 5000k religiously.

or you add an oil additive to knock down the noise.

eventually you will have to replace the tappets.
you may want to pull the valve covers and verify all valve rockers are torqued correctly -- looseness hear can create noise.

May be under the valve cover. Lifter may be going flat or tappets loose or bad pushrod. don-ohio (:^)

The clicking noise emanates from the clicking of the
valves, and tappet hammers, under the valve cover.
If these are noisy, it means that it need to be adjusted
for the proper clearances and retightened. Have these
items checked to completely solve your problem. These
valves when properly adjusted will give your car good
mileage.

depending on what engine, you may have adjustible lifters. aIf it doesn't you may have a lifter bleeding down. you may want to try a bottle of lucas additive your next oil chang.

this engine produces timing chain noises at aprox. 50.000 miles (80000kms) depending oil service intervals

there is a vacuum line PCV that goes to the drivers valve cover the hose could be broken down and causing the noise could be other things but that is the first thing that comes to mind

Sounds like a drive belt. With the car off, rub each belt on the underside of the belt, one at a time, with wax from a candle or crayon.Cover the entire width of the belt and 10 to 12 inches of it's length then start the car. If it is the noisy belt it will change or eliminate the noise.Do this for each belt shutting off the engine each time.Change all the belts even if you find just one bad one as the others won't be far behind.

Thank you allowing me to provide my assistance.

Is the noise that you hear a loud "humming" nosie? If so, I need you to remove the lower panel, under the glove box, (if it has one), and remove the 3 screws that hoilds the heater fan to the plastic box. After removing the fan, inspect the fan and inside the box for debris. Most likely, you will find some type of debris contained in the fan blades. This is very common, I drop 2-3 fan motors a week around this time of year. You may also find a rodent nest in the fan area.