04 Honda Civic EX 17 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 P0301 Misfire on cylinder 1 Thread starter Syntek; CEL misfire codes I have a 03 civic hybrid with an intermittent CEL issue It is giving me P0300 and P0301,02,03, 04 etc all misfires Occurs at low RPM No other DTC's given When I clear the system, it is fine for a bit then the CEL comes back on I've checked fuel pressure per the Honda service manual, it has 40 PSI pressure
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