But that will only test pressure to the outside of the filter. The best way to do it is to screw a gauge into the test port on each head. One is on the front of the passenger side head, the other is on the rear of the drivers side head under the turbo.
A forum community dedicated to Ford F-series owners and enthusiasts with a Power Stroke diesel engine. Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more!