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Multiple cylinder misfires after oil change
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12-17-2012, 11:06 AM | #1 |
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Multiple cylinder misfires after oil change
I was due for an oil change so I finally got around to it this past Saturday. Followed the DIY by the book except I went with 7 qts of Royal Purple 5w-30. Almost immediately after I started the car the engine started shaking really bad. After about 15 secs of this the RPM blipped to about 1100 rpm and the shaking stopped. I reset the oil service counter and turned off the car. Started it again and the shaking came back and this time the CEL came on. I ran the codes and got P0300, P0301, P0304, P0305, P0306, and P00BC.
I tried swapping the plugs and coil on cylinder 1 with 2. It made no difference but it was getting late so I left it at that and would deal with it tomorrow. I cleared the CEL before I stopped. Next morning my brother needed to change his oil too and needed my car out of the garage. I went to drive it out and miraculously the shaking was gone. Restarted a few times but shaking never came back and no CEL. Drove about 40 miles this morning with 50/50 highway/city and it drove just fine. Actually noticed 1-2 extra mpg and much cooler oil temp too. I'm just scratching my head wondering what the heck happened. |
12-17-2012, 03:50 PM | #2 | |
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