RustyRatRod said

Very simple. You put this inline fuel filter in it and plumb the return line to the 1/4" nipple. That nipple has a metered orifice that only allows enough return so as not to drop fuel pressure too low.

https://www.oreillyauto.com/detail/b/wix-5291/fuel---emissions-16775/fuel-injection-16471/fuel-filter-water-separator-12305/25614d8c10ec/wix-fuel-filter/33054/4832408/1982/dodge/d150-pickup-rwd?q=fuel+filter/water+separator&pos=1

Click to expand...