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terry hamilton Posted on Jan 25, 2014

Po 300 code

Engine light on coe po 300

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Mark Perrault

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  • Posted on Mar 07, 2014
Mark Perrault
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That's a random misfire. It could be bad plugs, wires, coils, intake gaskets and a whole lot of other things. You need to have that diagnosed by a mechanic. The cause of my po300 code was a bad intake gasket found by the random misfire of cylinders 1 and 2 so it was at the front of the vehicle the mechanic spayed something around the front of the intake and the rpm's increased. bad gasket sucking to much air into those cylinders and causing a false misfire. I say false cause it did fire the gasses produced where not right the computer did not like the extra air

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