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Random misfire code p0300 help

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Old May 11, 2012, 10:17 AM
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Random misfire code p0300 help

Ok so I have had this happen in the past but more intermitten. I clear it and its gone for a few months Well after a head rebuild only thing that changed were the valves not size just brand I throw this code every day. I clear it and it comes back. Car drives fine. Did it with new and older plugs. I havent changed anything other than the head rebuild. I know with Mivec and cams this code isnt uncommon but ot is daily at this point. Anyone have any thoughts? insight?
Old May 11, 2012, 10:23 AM
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I had that code intermittedly after I had my GSC stage II cams installed. I mentioned it to my tuner, he retuned it, and the code hasn't come up since.
Old May 11, 2012, 11:01 AM
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Yah Thats what I figured. I will have to look at my tune and see if I can turn it off or make some adjustments. Wasnt sure if it was something else since I have had the same cams on my car for 3 years

Originally Posted by RoMeIX
I had that code intermittedly after I had my GSC stage II cams installed. I mentioned it to my tuner, he retuned it, and the code hasn't come up since.
Old May 11, 2012, 11:25 AM
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I have the same issue on my IX with GSC2 cams as well. Have yet to get the code "tuned out".
Old May 11, 2012, 08:40 PM
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Did you change the off idle timing just prior to it happening?
Old May 12, 2012, 11:08 AM
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No Havent messed with any of that stuff.

Originally Posted by C6C6CH3vo
Did you change the off idle timing just prior to it happening?
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