THE OTHER DAY WHILE DRIVING I NOTICED A IDLE PROBLEM.I PLUGGED MY SCANNER IN AND IT READ RANDOM MISSFIRE.I HAVE HAD THIS PROBLEM BEFORE SO I DISCONNECTED EACH COIL PACK ONE AT TIME WHILE RUNNING.ONLY CYLYNDER 1,2,4 MADE A ROUGH IDLE.SO I ASSUMED IT WAS ANOTHER COIL PACK THAT WENT OUT.BOUGHT NEW ONE AND STILL THE SAME PROBLEM.THE OLD ONE HAD SPARK AS WELL AS NEW ONE.REPLACED ALL PLUGS BECAUSE I THOUGHT THAT COULD BE THE PROBLEM BECAUSE THE #3 PLUG WAS FOULED.THIS I AM ASSUMING DUE TO NOT SPARKING.TESTED THE SPARK PLUG,AND NO CONDUCTNUITY.STILL THE SAME ROUGH IDLE.CODE STILL POPPING AS RANDOM MISSFIRE.ALSO THE #1 PLUG HAD OIL DOWN WHERE THE SPARK PLUG WAS.BUT WHEN DISCONNECTING COIL ROUGH IDLE.NOT THE PROBLEM.IT HAS SOMETHING TO DO WITH #3.WHEN DISCONNECTING COIL#3 NOTHING CHANGED.BUT IT HAS SPARK.SOMEONE PLEASE TELL ME MY PROBLEM. THANK YOU, CHARLES
Country: United StatesMake: Nissan/DatsunModel: Sentra SE-R Spec VYear: 2002Engine: 2.5
COIL,SPARK PLUGS,OBD SCANNER
Thanks for your question. Sorry you're having car problems. If I go off line, just leave a message and I'll be right back. DO NOT leave feedback yet. You need to check engine compression, it sounds like there is a loss in #3. Thanks, Ron
Please note; your Deposit doesn't constitute a payment. Please be sure to rate OK SERVICE, GOOD SERVICE OR EXCELLENT SERVICE /3-5 STARS /SMILEY FACES to complete transaction or ask for more help by clicking REPLY TO EXPERT.
Positive feedback is always appreciated. Please note that if you have a subscription service you still need to rate the same as mentioned above, EXCEPT you are not charged again.
Please note the 1 to 2 faces equal (POOR AND BAD SERVICE) are a NEGATIVE rating. Before choosing one of these, please reply first so that I can further help you,
Thank you, Ron
Please note: not every answer I give you is something you were hoping to hear, even though it is true, such as; (it’s more expensive than you wanted to spend, or you will need to have a professional repair shop do the diagnostics and /or repairs due to complexity reasons).
37 years experience
Our chat has ended, but you can still continue to ask me questions here until you are satisfied with your answer. Come back to this page to view our conversation and any other new information. What happens now? If you haven’t already done so, please rate your answer above. Or, you can reply to me using the box below.
A problem in CHAT, I had to switch us to Q & A. Thanks, Ron
COULD IT BE A FOULED INJECTOR.BECAUSE THIS WAS SUDDEN
If the compression is good, then that's where I was heading next. Now if the injector is stuck open, it can be one of two things; a bad injector or a bad computer. So your next test would be to ohm the injectors and match the others against #3. Thanks again, and be sure to let me know if you need any more help. Ron
TO GET THE INJECTOR I HAVE TO REMOVE THE MANIFOLD RIGHT
It looks like it, the upper part. Ron