I had the same problem.
IF for some reason the tapping of the hose does not work???
Fuel could be "Malases".
If that is true?
Then you need to take the fuel out of tank and clean it with clean fuel.atleast.
Change the filter.
if that works , Cool ,if not ?/
Then you have to go to the next level the fuelinjectors ..
Take them out send them to be cleaned abot $ 25 each.
Keep us informed
Good luck



