2003 Pontiac Sunfire PCV VALVE location, removal and installation
I am STILL trying to FIND out 100% for sure WHERE my PCV valve is located in my 2003 Sunfire 2.2 ecotech engine. the local chev dealer said there are TWO ecotech engines for this year, one takes a normal PCV valve and the other has the PCV valve built into the valve cover.
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It's not a PCV valve like back in the day . It's a fix orifice in the valve cover . Where the breather hose hooks to the valve cover . You would need to take the valve cover off an clean the orifice with carb clean or brake clean .
You'll find the PCV valve
on the right side of the front valve cover. You'll need to remove the
valve in order to troubleshoot it to determine if you need a
replacement. To remove, pull the PCV valve out of the cover and detach
the old PCV valve to determine if it needs replacing. Blow air through
it in order to see if it is clogged. If it does not seem to ventilate,
then you'll need to install a new valve.
the new PCV valve into the spot of the old valve. With the correct
part, it should snap right in. Take the hose and reattach it in order
to complete the installation.
The PCV valve can be located in several places. The most common location is in a rubber grommet in the valve cover. It can be installed in the middle of the hose connections, as well as installed directly in the intake manifold.
Once the PCV valve is located, make sure all the PCV system hoses are properly connected and that they have no breaks or cracks.
Remove the air cleaner and inspect the air and crankcase filters. Crankcase blowby can clog these with oil. Clean or replace such filters.
Oil in the air cleaner assembly indicates that the PCV valve or hoses are plugged.
Make sure you check these and replace the valve and clean the hoses and air cleaner assembly.
When the PCV valve and hose are in satisfactory condition and there is oil in the air cleaner assembly, perform a cylinder compression test to check for worn cylinders and piston rings.