S16 Diagnostic light

[Pingaz]

Hello

I had a problem with my S16, I had a lack of power a pit were nothing happen, a rough idle, miss fire, and it struggles to start. I belive that didn't had any "K" light lit up.

There some videos of the problem:







Then i changed the plugs, the problem it's solved "I belive", when i changed the plugs i disconnected the batery so nothing could go wrong. But know, I have the diagnostic light (Most known as K light). Could that be because a fuel leak ? I know i have a little one. Or that the "computer" reseted ?

There is a video of the car now:





Any ideias ?

Sorry for my english, it's not my native language