Is my tach junk?

[stock car driver]

Yeah you can hose it out with water, thats pretty much what I do all the time, it seems like you can never air blow all the dust out to me.

[rubbinsracin]

im guessing you have to use something with very low pressure? otherwise it would compromise the filter if you got carried away with a power washer lol straight out of the hose with no sprayer of any kind would be my best bet right stock car driver?

[stock car driver]

I spray mine with a nozzle on the end of the hose. Blasting it out with water from the inside out, it hasnt appeared to hurt either of the two filters I rotate back and forth.