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Old 08-24-2008, 08:14 PM
hawaiih3 hawaiih3 is offline
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Default Re: P0300//mulitiple misfire

Thank you for your input:


I have the 2006 H3 3.5L/L5 engine. Prior to code pop up I used Chevron fuel but always fill up with Philips 76, I did check for vacume leaks didnt find one ( I checked the air intake tube, the air box and the valve cove to air box hose), I just put in new iridium plugs and I did check the gap they were .043 (pre-gapped) which is where they should be but I went ahead and regapped them to .041 just to make sure but no change at all,I havent tried the fuel filter. The rpms on the live data stream show from 611 to 634 at idle it is not a smooth a steady graph reading and did find that to be odd. I have appr. 46k miles with no major mods except the K&N filter which I had in there about 1 1/2 years with no issues, and only use regular unleaded ,every once in awhile i do give her supreme but never had light pop up.
TY
JJ

Last edited by hawaiih3 : 08-24-2008 at 08:52 PM.
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