jjrbus wrote:
Again thanks for the responses always appreciated.
I purchased the aluminum gas cap sold online. After only a couple uses the gasket/washer ripped. I contacted the seller and he replied with a list of other things he has for sale! It is a 1 3/4 inch washer which is not readily available anywhere. Lesson learned, will recommend modifying the Honda cap for others.
So far I am not having any vacuum issues, I cannot measure the vacuum and barely see fuel in the line but it keeps working so will stick with this for now and keep other options in mind.
I also want to experiment with how high the Honda can raise fuel.
I have my Honda in a box so the goofy new fill spouts do not work, I use a automotive transmission funnel to fill it. Plus the new improved spout broke after only a few uses.
For those interested, there is a y-tube video that shows how to use the OEM Honda gas cap and the price is ok.