Quote:
Originally Posted by upallnight
Mostly likely a bad coil. Swap the coils between 1 and 6 and if the code move to 1 you found the problem. If the code doesn't move to 1 replace the spark plug in cylinder no.6.
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It may be that holding the engine at various RPMs cleared the plug for awhile. If either the coil or plug is bad the miss will return before long.