Posted by jdemaris on November 16, 2010 at 18:40:43 from (67.142.130.39):
In Reply to: Re: Fixed it posted by ASEguy on November 16, 2010 at 15:43:46:
Yeah, I know the what knock sensors are put there to do. We're just trying to guess how a Subaru with the OBDII system can detect two cyinders that are running with the valve-timing one-tooth off - and subsequently register the event as trouble codes PO 301 and 303 - i.e. "misfires." In reality, it's not a misfire. More two cylinders running a little weaker with the valve-timing slightly off.
As I said, I'm guessing. How does it know two cylinders are a little off?? Knock sensor actually hears ignition, so maybe it's hearing it at a different time in regard to injectors firing, then the two cylinders that ARE in time?
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