my s2k 's engine light goes up and i check it from the dealer and they told me that the spark plug is wrong, so i change the HKS spark plugs, but the engine light is still here, so i wanna ask you guys what can i do as i already change the spark plugs and the random misfire is still here, or should i get the OEM one(denzo or NGK)

Thx helpin'.....

 

There are lots of things that can cause a misfire and "spark plugs" is only one of them. Also, after you put in new plugs, did you reset the ECU? It won't go out by itself right away just because you put in new plugs. If you reset and the light comes back, then it wasn't likely the plugs. On the subject of plugs, I can't comment on whether or not those are the right ones to use for this engine, but you should at least know what the gap is set at. Do you know that?

You could also have a bad coilpack or 2, bad fuel injector or 2, bad valve adjustment or a bad ECU. You have to go through a process of elimination to get to arrive at a solution.

 

Had a guy here earlier who had a vacuum leak that caused this too.