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That would certainly be one explanation. I'm starting to think about getting a JDM engine replacement.
I suppose another possibility is that the fuel injectors on cylinders 1 & 2 both malfunctioned at the same time while the injectors on cylinders 3...
As I said in my original post the computer analysis always shows 300, 301, 302 “frequent random misfires cylinders 1 and 2.” Replacing the plugs...
Thanks for the replies. The plugs are 3 months old and still look fine.. Switching the coils around didn’t change the fact that cylinders 1 and 2...
2008 Prius with 200K. Last 4 months: rough cold start, significant drop in mpg, carbon buildup in tailpipe. No check engine light. O'Reilly...