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post #1 of 5 (permalink) Old 08-29-2016, 01:05 PM Thread Starter
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Bad miss in 07 cobalt

Had a timing chain put on our 07 cobalt, now it's got a bad miss, he put new Autolite spark plugs in it, has a p0300 code, multiple misfire, any ideas?

Last edited by Chuck61; 08-29-2016 at 01:12 PM.
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post #2 of 5 (permalink) Old 08-29-2016, 01:53 PM
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Did the timing chain jump prior to changing it? And these cars don't run well with anything other than ACDelco dual iridium.

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post #3 of 5 (permalink) Old 08-29-2016, 01:58 PM Thread Starter
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Yes it did jump time prior to changing it
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post #4 of 5 (permalink) Old 08-30-2016, 06:49 AM Thread Starter
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Pull plugs and #3 is filed,
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post #5 of 5 (permalink) Old 08-30-2016, 07:06 AM
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If it jumped more than 2 teeth chances are you have a bent valve, check compression.

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