Need to know how to remove the PCV valve on a 2003 Mazda MPV? The 2003 Mazda MPV was among the third generation of MPVs introduced by Mazda since the inception of the line in 1989. The 2003 and the other MPVs in its class are all powered by a 3.0 liter AJ V6 engine and are equally at home hauling goods and people. The PCV valve is an important part of your car's exhaust and emission system that helps cut down on the air pollution produced by your Mazda MPV. In this case, the PCV stands for positive crankcase ventilation. Essentially, the PCV valve takes unburned gases from the engine and circulates them back into the engine's combustion chamber so that they can be burned in the engine, rather that spit back out into the atmosphere through the tailpipe. In order to maintain a healthy and happy engine, you should replace the PCV valve every 40,000 miles. You can purchase new valves from Mazda (expensive) or buy alternative valves at your nearest automotive shop. Removing the PCV valve on a Mazda MPV for replacement or inspection isn't a difficult task, and can be tackled by even the newest mechanic.
- Park your Mazda MPV in a flat location with plenty of room to work. Put the car in park and pop the hood. Allow the engine enough time to cool off to the touch.
- Disconnect the negative battery cable. This is the black cable running from the battery. Unscrew the terminal with a wrench. Pull the cable off and tuck it to the side so that the terminal is out of the way.
- Remove the intake manifold by unscrewing the bolts holding it in place. Remove the PCV valve by unscrewing it from the engine block. You can now either inspect or replace the valve as necessary.