I bought a bypass filter like yours for my truck engine off Ebay.
I agree with what the guys said above about it being plugged with gunk... mine was plugged too.
I did as Jerry suggested above and shot some air through the lines and the sludge shot out.
I flushed it a few times and when happy with the results, I finished cleaning the housing and then painted and installed it.
Jerry W.


1959 Chevy Apache 3200 Stepside
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