try backwashing? do you use a filter in line?

I have an inline filter and the water is pretty clean to start with. It's not new drip line, It's on the 3rd crop so maybe my liuck is running out with it.

What pressure do you back wash with? Regular house pressure I would guess?

i would just take a garden hose and spray the emitters from the outside and see if that opens them up. or cut out the bad ones and add new tape on the end.

If it's due to minerals from hard water, you could try adding some vinegar on the outside to dissolve them.

Thanks for the tips. I'll try pressure from the outside even if it's hard water it might break some of the deposits. Seem like a little fixture for an air or manual water pump would be nice for back flushing the emitters in the field.

I put in all new every year.