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Thank you Eric. So today i removed the intake manifold and swapped injectors #3 & #4 and put the intake manifold back together( when i tried to put it back all hell broke loose but later on that) and immediately the scanner showed the code P0204 and P0304( instead of P0203 & P0303) and while the engine was developing a misfire (its was not misfiring all the time) i performed a power balance test which was in complience with the OBD codes and cylinder #4 has the problem now. So i ordered a new injector for 95$ (or 70€) and i am waiting for it to arrive. So about the all hell broke loose thing. When i picked up the intake manifolf from the floor to put it back together it started to drip oil, a lot of it (about 3oz) and when i removed the throttle body a saw that all the interior was covered with oil. Also a rubber gasket between the valve cover and intake manifold was leaking oil and the top of the valve cover was covered in oil-dirt (i applied some gasket sealer when i installed it later). Then because the manifolds interior was covered with oil i thought that it was a good idea :silly: to remove the MAP sensor to clean it. I tried to pull the sensor out and i was very (and i mean VERY) carefull and it BROKE :angry: . The plastic was completely flimsy. Anyway i used some superglue and epoxy as a temporary solution until i get a perlacement part. I cleaned the manifold with brake cleaner and put it back together.
Any ideas why my manifold had so much oil inside?Thank you. I have to find some time for that. In order to access the injector rail and the injectors i have to remove the intake manifold (the rail is underneath the manifold). There is almost no room to work in the engine bay. If I swap injectors #3  (as i did with coil plugs and spark plugs for the same cylinders) and the code is still P0203 the wiring will be faulty, if the code is P0202 the injector will be faulty.
Thank you. I have to find some time for that. In order to access the injector rail and the injectors i have to remove the intake manifold (the rail is underneath the manifold). There is almost no room to work in the engine bay. If I swap injectors #3  (as i did with coil plugs and spark plugs for the same cylinders) and the code is still P0203 the wiring will be faulty, if the code is P0202 the injector will be faulty.