Whirlpool front load washing machine, model AWM 293?

I pull out my detergent/softener box, clean and check the water injection behind it, I see the water injection is very low and it runs slowly into the washing bowl, thus it doesn't reach the washing powder / softener box, I have to manually pull washing detergent and softener in one go inside the front load machine with my clothes. Can you help me? The water injection is very low and water runs very slowly into the washing bowl, thus it takes so long to finish one washing. What can I do to fix this problem. The machine still functioning, it's just taken too long time to finish washing.