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work order says cylinder 3 and 5 misfired, I don't have the code #. My theory is that it was a perfect storm----my truck had a major exhaust leak, it had been sitting for about 5 days and I started it the coldest morning of the year when it was about 5 above causing it to misfire. Still starting and running good.
Was it running good when you took it in?
I bet that fuel injector thing was just a guess/bs!
Diagnose it as fuel injectors, do plugs and the 3 and 5 coils at the same time (while we are there) on the customers dime an you cover it all!
 
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