I am new to honda had mine for 4 years but still suck at working on it more of a gm guy. I have to replace my spark plugs damn near every 3 weeks and i **** you not every 3 weeks on the day. They are burned black beyond recognition and the car spits and sputters like its out of gas. Its a 1998 honda civic D16y7. Cold air intake and dc exhaust but when i replace plugs runs fine for 3 weeks only. Need help dont know what the problem is. I know d16s have issues but never heard of them being this bad

 

this regards all vehicles not just honda.

 

Never heard of this issue with d series and I have owned a few. Use the charts the above poster provided and go from there.