My civic is turning over but will not fire to start. The problem is intermittent. We have checked everything, replaced map sensor, ecu, fuel filter. The fuel is making it through then filter fine, but my spark plugs are dry. First we replaced fuel filter. It worked for 5 days. Then stopped. Thought it could be remote starter kill switch, so we disconnected everything and the car sated perfect. Thought that was the problem. But two days later it wouldn't start again. Any ideas?