When do I have to change timingbelt for Mazda millenia 2002?

Question edited for clarity and Madza to Mazda.
Question moved to model category.

You need cylinder 1 on compression stroke with Inlet and Exhaust valves closed. With the piston at its highest point, you have TDC.

Diagrams

https://www.google.com/search?q=mazda+millenia+s.+2.3+tdc+timing+marks

This would be an easy question answered by a Mazda dealer. Call the parts department. Most parts stores could answer this for you as well.

Dwight, sounds like you are having some trouble with the torque converter. Check the fuild level and maybe even change the fluid and filter. When it does shift does it shift normal or hard?

see below:
Mazda Millenia Headlamp Removal Bulb Replacement

the code you have is because you have a misfire on cylinder number 5 since you have already changed all the plugs and wires only two other possible causes either injector number five or a bad valve on that cylinder while idling put a piece of paper at the tail pipe if paper gets sucked back against pipe its a bad valve if not i would go after the injector..good luck hope this helps you.

pleas eopen the hood,find the steering pump of the steering,rotate the pulley to center the bolt,get a number 14mm socket wrench to remove the boltupper portion and the lower portionthen loosen the back bolt of the pump then retract the belt to loose then remove the belt

Sign up for the autozone online website and you can download the instructions there.

MASS AIR FLOW SENSOR IS ATTACH TO AIR DUCT TO AIR CLEANER HOUSING.

it is located in the trunk behind the back seat pull the trunk carpet back and its a silver plate unscrew it slide it back and its right there easy to change

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

JUST RELEASE THE PRESSURE AT THE FUEL PRESSURE TEST PORT ON THE FUEL SUPPLY RAIL THAT SUPPLIES THE INJECTORS, IT IS A METAL VALVE LIKE A TIRE VALVE, THAT IS THE FACTORY RECOMMENDED METHOD..