Something to check on is the CMVC plates. They are located in the intake. As they get older they will sometimes start sticking or have build up on them. The buildup impedes air flow which can cause misfires.
The Title is in Spanish but the important info is at the beginning and in English. The rest of the vid shows how to access them and work on them.
Basically, remove the Intake manifold, inspect and clean them. Reinstall the intake.
Basically, remove the Intake manifold, inspect and clean them. Reinstall the intake.
