Hello again, it seems like it was a hose connected to the intake manifold that was lose. I made a quick fix with ducttape and a new clamp.
However I got a EOBD/OBD2 reader since I thought it would be good. Anyhow on there in V/A diagnostics under engine there was three faults (1. Idle RPM higher than expected, 2. System too lean at idle, Bank 1, and 3 Bank1, fuel measuring system 2, malfunction)
This lead me to a few open ends and a faulty PCV valve was mentioned so I got myself a new one. I haven’t paid attention much but when I got the piece I realized that it seems like pervious owner have made a PCV delete. See picture, it only has 1 hose connections instead of 2. And I realise that the part that goes to the intake manifold is missing, on the intake manifold it’s a tube that’s connected to the back of the engine (it was also this hose that was lose when the engine was stalling). I have a picture of the other end also. My question is where is this hose suppose to go? When I look at PCV replacement videos on YouTube it’s always this extra hose part on the PCC valve that goes to the manifold so I’m very confused of what’s there right now? Also it looks like most PCV delete kits only use a small plug for the intake manifold.