109K views · 736 reactions | Inside look at a intake valve on a running engine! Check out the air and fuel mixing before it gets drawn into the engine, and even the fuel floating back up off of the valve after it closes!  #efiuniversity #efituning #efi #engine #air #fuel #airfuel #engineering #airfuelratio #engines #motorsports #car #cars #hotrod #motorsports #ford #fordgodzilla #fuelinjection #fuelinjector #dyno #enginedyno | EFI University | Facebook