Can not tell you the color but plugs have been changed and according to the mechanic they are looking great. We had to change them and make two of them different due to the way they were burning and looking.
No way should you need to change plug types across the bank to make it run properly on all cylinders. This makes me question your mechanics opinion of "looking great".
What other fuel is there? All or I should say just about all fuel has ethanol and I really do not know what to do. I run octane buster and carb enzyme through it to get the best response I possibly can.
It just that ethanol fuel with provide worse mileage that pure gas. It a mater of expectations. I would expect a 750 to get about 45 MPG or better on real gas, but 10-15% worse on ethanol blended fuel. You can thank your elected officials for sabotaging your gas.
Emulsion tubes and everything has been super cleaned as well as most of it has been replaced. Not the tubes, but they have been cleaned several times.
Whoa. You've replace carb internal parts? Were these Honda Genuine or aftermarket? There have been many reports of "running rich" after switching to aftermarket internal carb parts, particularly the slide needles, which are dominant during cruise conditions.
Floats had to be adjusted to get rid of a stumble we were having in the lower idle range. It is about gone but still a little tricky when cruising down the interstate. They are adjusted 2 mm beyond stock settings.
This is frustrating, as you are asking for precise information without giving any. 2mm WHICH DIRECTION? Higher or lower? Was this float adjustment done after the slide needles were replaced? FYI, higher float levels make all operating ranges of the carbs richer.
What do you do and what are your specific settings to get good gas mileage?
Gotta know what parts and settings the carbs have now before making changes.
Cheers,
