Commit to Memory Banks...

Just wanted to pass along this knowledge. I was having a problem with a 2.5L Sentra. The problem started as intermittent hard starting warm and cold... and engine roughness for 5-10 seconds after start. Over several weeks of exhibiting these symptoms... I got the "check engine" light. The code was P0303 (cylinder #3 misfire). I reset the code and waited. A few days went by before the light was on again. Same code. After thinking about the symptom (hard starting) and the code I was receiving... I deduced that my injector in cylinder #3 was not closing properly. This would cause fuel from the pressurized system to leak into the intake maniford after the engine was shut off. I replaced the injector... the problem is fixed. No more hard starting... or codes coming through.

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