Question about Mitsubishi Galant

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I have a 2002 mitsubishi galant ES with an odometer of 162500. i did a smog check yesterday and it failed. it says P0302 cylinder2 misfire. what can i do about it? my RPM is also 1400 instead of 700. the gas mileage is very low. i'll appreciate any help u can give me.

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  • nic420_fuent Mar 24, 2011

    I'll have it tuned up tom and hopefully it helps. What wire, plug do i need to check? How about the boots? Do you think the misfire causes my RPM to get too high? Because the ignition timing failed during the smog check also due to high RPM. my NOX measured 558 at 15mph but the maximum allowed is just 459. Appreciate!

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Check your plug,wire, and especially the boots, if theyre cracked they can cause your spark to arc and create your misfire in that cylinder. You may need simply a tune up for that matter.

Posted on Mar 24, 2011

  • Larry Bogenschutz
    Larry Bogenschutz Mar 25, 2011

    i think the misfire and the high rpms are different issues. the misfire, check like I told you, check the plug, wire, boot on the cylinder you got the misfire....
    Is it idling a constant rpm or does it fluctuate? Try adjusting the idle down, if that dosnt work it sounds like an idle sensor is bad.

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