I was reading that a lot of people experience valve clicking in their cars. I think I have this to an extent too in mine. I was wondering if there is a way to adjust the valve lash in celica's or if it's just something you have to live with until you get new valves or heads. since this is a common problem I'm guessing our cars don't have automatically adjusting valves.
there is a way.
you can start by measuring yours.
pop your valve cover off, and measure the clearance underneath the roller lifter not the spring loaded side. with the cam's pointing north. keep rotating the engine so you can check all cylinders.
the tolerances are listed on a sticker on your Hood
then report back to what they are, if they're in spec and still noisy you have nothing to worry about, as this valvetrain is rather noisy.