Ok here's what happened. I was going on a short uphill when I started losing power, I thought I was in the wrong gear. I thought I was in fourth so I pressed on the clutched and realized I was on right gear (2nd) then the car died on me. It cranked but it didn't start, I had to press on the gas then it would start and sputter a little before it regains normal idling. It happened twice to me that night.

Sometimes when overtaking, I would press on the gas and somewhere along the rpm I lose power, like it's not even pulling (sputters), even on VTEC sometimes

I had my oil changed and noticed oil was leaking to the plugs in one of the cylinders. So we changed the O-Rings on the plugs and I thought it was going to fix it. It didn't. Then I changed the plugs still didn't help. My mechanic was thinking of the coils or the distributor itself but I think it might have to do with fuel since I have to press on the gas for it to start after it stalls.

Fuel pump, Fuel filter, main relay?

99 Civic SiR with B16A

 

fuel filters are cheap. switch that out if you havent lately
and get a new fuel pump walboro 255lph cheaper than stock.
your main relay should be fine. its either good or bad

 

Is the CEL ON?

I would not rule out the distributor at this point. In addition, when were the plug wires, cap, and rotor last replaced or inspected?

 

Okay i'll get my fuel filter changed. Throwing no cells, and since I bought the car i haven't checked or replaced the wires cap and rotor.

 

Ok i haven't changed the fuel filter because I saw my intake was clogged so i cleaned and it. It stopped stalling on me but I still bog on high RPMS, around 6.5 or 7 rpms. Could it be the fuel filter or plug wires?