Got in my 08 Tl TypeS today and the CEL was on with codes p0300-p0306 (random+each cylinder misfires). It is a manual, however I don't believe I've over rev'ed it, so I'm ruling out bent valves. It isn't really rough idling or holding back on acceleration. Any run down or help would be appreciated!

 

P0300 ACURA Random Cylinder Misfire Detected

 

That code(s) is not really a misfire, it's just that the ecu doesn't see the predetermined advance after
a plug fire and throws a code, so it's something that is affecting all cylinders.
Plenty of possible problems it may be, but start with the EGR valve, vacuum leak.

 

Maybe loose spark plugs.

 

I reset the ecu and the CEL didn't come back after a couple minutes if idle and revving, haven't driven it yet. I'll look into the EGR valve today. Have an idea of where a vacuum leak would be coming from for this? After the throttle body I would assume?

 

Any update?