RY4 should have a pretty powerful taste. Its different for different people, for me it starts out as a vanilla/caramel, then it hits with a burst of citrus and finishes with a hint of pine. The problem is 2 fold really:
1) it depends on the vendor, RY4 is different from different vendors and
2) the flavor is TOTALLY dependent on the nicotine strength. For example, I bought some 18mg RY4 from RockyMountainVapor... it was the most flavorful, best tasting liquid i have ever had. Now, I wanted to start lowering my nic content so I bought some 11mg RY4 from the same company. The flavor was just not there... it still tasted good, like RY4 but it didn't have anywhere near the amount of flavor the 18mg had.
So the two questions that you need to answer are: 1) where did you get it from and 2) what is the nic strength?