How many injectors does an rx7 have?
An Rx-7 has 4 fuel injectors. 2 primary and 2 secondary.
Sugar will not turn to sluge or 'cement' in your gas tank. It will however block your fuel injectors and fuel filter. Replace the fuel injectors or clean them and replace your fuel filter. You may have to replace your fuel filter a few times. If you can, take your gas tank out and wash it with water.