Ticking lifters in the 86-93 Mazda pickup trucks is very common, the design is just prone to it. Sometimes it is dirt or something clogging one of the small passageways in the rocker arm assembly, sometimes it is low oil pressure, sometimes it is just a bad lifter. Sometimes replacing the lifter will fix the problem other times it won't.
It is often recommended to remove the entire rocker arm assembly clean it well, run a needle or wire through the find passageways, replace any damage hydraulic lash adjusters then reinstall. See the attached link for more details.
K6
Mazdatruckin.com
Stuck hydraulic lifter.
Saturn vue V6 lifter noise when first started
NO. The engine computer is in open loop until the engine heats up to operating temperature 195 degrees are more. that means it don't hear the lifter noise and by the time the computer can, the lifter quites making noise.
Collapsed hydraulic valve lifter? Rocker arm (valves) need adjusting?
Depending on the vehicle, it most likely needs adjustment.
New lifters or repairing the cause of low oil pressure.
An air intake house can be the cause of wind noise underneath a 208 Mazda 6. The problem could also be a bad seal on either your window or door gasket.
Bearing noise is usually deeper and comes from farther down in the engine. Lifter noise is more of a ticking and is up in the engine heads.
Is it a lifter ticking?
you need new brakes
could be a lifter sticking
The thing that could cause a knocking noise in your car is the same thing that could cause it in all cars A rod that or a flat lifter. it all really depends on where the knock is if its higher and to the back of the motor, it could be a motor mount