buy new motor
?? Lifters not getting enough oil ??
The 2000 Mazda 1.8 liter engine valve cover torque specification is 45 pounds. The valve cover bolts should be torqued in 15 pound intervals.
it will be your valve lifters common problem for the Mazda 626 engine when they start to get up in the milage
Valve lifter could be sticking. Take the valve cover off and start the engine. You can narrow down which one it is. Might Not be sticking and just need adjusting.
instructions on how to install engine valve cover gaskets on l996 Mazda mpv van with 3.0 engine.
The PCV valve on a Mazda 6 V6 is located on the valve cover near the back of the engine. The PCV valve is usually a plastic or metal part that looks like a small tube sticking up out of the valve cover.
Change the PCV valve located on the valve cover
On my 1997 Protege a hose runs from the valve cover to the air intake assembly. Where the hose connects to the valve cover is the PCV valve.
Loose, broken, or worn valve train component. Remove the valve cover to find the problem.
Check the PCV valve. It is located in the passenger side valve cover near the rear.
on 99 models with 1.8 liters on top of engine in center of valve cover
If they are mechanical lifters, then there is an adjustment under the valve cover. If they are hydraulic then there is no adjustment, and while a different weight motor oil or special additive may help the ticking there is not real way to stop it.