Acura Repair Questions? Ask a Mechanic for Answers ASAP
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PLEASE READ THIS FIRST:
If you’re thinking on working on the vehicle yourself, all my knowledge and resources won’t help unless you…
… have basic knowledge and mechanical skills, and…
… have whatever tools and equipment might be needed for a proper diagnosis
Having said that, misfires trigger data trouble codes which are set, recorded and stored by the onboard computer along with a snapshot (freeze-frame) of the basic engine conditions present at the time the event was recorded. Knowing those codes and freeze-frame data will help us help you solve your issue in a more effective manner. Can you get and post that information for us so we can continue?
I understand. If it's any help, misfires are caused by lean conditions (more air than fuel in the combustion chamber). Since your engine misfires only at idle, I would take a can of carb cleaner and carefully and slowly spray around all the places where unmetered air might be getting into the engine; places like around the intake manifold, base of the throttle, etc. Also make sure to spray right into the EGR valve; eventhough that's exhaust gas and not technically air, a stuck open EGR can also cause the engine to misfire at idle.
Please let me know what you find.