Need some wash help.

Ok, here's the story:

I have an old (and I mean OLD) Kenmore Ultra Heavy Duty washer and dryer set I bought second hand from a local appliance shop. It was all I can afford at the moment, and there's NO WAY I would have cd'd if I had to use the laundry mat. Its a top loader.

Anyway, No matter how much detergent I put in, I never see any suds. I have had stinky hemp issues on and off since I started using hemp. I do a strip wash every other week or so, and it just keeps coming back. My DS has gotten detergent burns TWICE now, which I don't understand since I never see any suds in the wash water, and only add detergent to the first wash.

Here's my routine at the moment:
hot wash/cold rinse with 1/4 scoop detergent and 2 TBSP of wipe solution (made by a friend - aloe and essential oils. Smells like TTO.)

THEN
Heavy duty hot wash/cold rinse with nothing.

THEN another hot wash/cold rinse with nothing.

They smell fine coming out of the washer and fine out of the dryer. As soon as he pees, you can smell it. He got a nasty rash just a couple days ago from his FB - he pood in it during the night and had red welts when I changed him (and I changed him in the middle of the night, so no - he didn't sit in it until morning.).

I don't know what else to do, short of selling off all my hemp. I've even tried bleach, and I ALWAYS use a microfleece liner at night. He's in sposies until I can figure this out, and I hate it.

Please, help a mama out. I am sad just thinking about having to sell all my pretty hemp fitteds and having to try to find something else that works for him overnight I have 2 sherpa dipes, but everything else is hemp fitteds or plain UBCPF's, which won't do for overnight.