Ethanol is used to cut good fuel. It's has less than 70% of the energy content of the same quantity of gasoline. Henceforth the lower MPG. An interesting experiment really. That's why vehicles are specifically made to run E85 or higher concentrations. Another bad idea by the powers that be...
No codes? Cold and warmed up? I'm with ST...check plug wires/coils in the dark with someone revving the motor....possibly arcing to the block...fuel pressure is harder to check....MAF can be checked with a multi-meter
I'm glad you are ok....Red light runner totaled my 2004 GMC 2 months ago.......I'm now waiting on a 2017 2500 Laramie CCLB 4x4......im trying real hard to turn it into lemonade....hopefully you can too.
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