Mechanical Problems
2004 Honda Civic EX 1.7 MTX 4 dr 170k miles. CEL came on about 2 months ago solid. I reset the codes, changed the plugs. The codes were p0300 p0301 p0302 p0303 p0304. The old plugs looked pretty clean no oil whatsoever, but gaps looked a bit big, so I got the expensive plugs. A few weeks ago the...