Question about Chevrolet Camaro

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Ok i have took it in to numerouse shops and they all said the same thing .... the code shows a "EVAP code but everything checks out"" and has started missfiring really bad at low rpms while in a gear without dowmshifting and as well does it while in higher rpms not quite as rough tho?????

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Mine was doing this landed up being a plug wire that was loose
my freinds was 3 week coils and bad wires
check wires coils and spark plugs
scan to see if any misfire codes shows up
check your fuel pressure if to spec if low could cause this also
fuel cap on tight and sealer washer in gas cap not damaged or flaten out
evaporative systems lines all in good shape rubber section not cracked

Posted on Apr 02, 2011


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