'99 Lift Pump test ports

[rashwor]

I should know this, from prior posts, but... on the '99 models, which test port on the top of the fuel filter base is the post-filter and which is the pre-filter test port? The test port nearest the driver's side of the truck is which one?



I hooked up Briarhopper's test gauge Saturday to each and done a test drive on each with no difference in the readings - my filter is still good!

 

[WyoJim]

rashwor... As you lean over the fender I think it is the left most one. I think it is also the closest one to the engine.

 

[csutton7]

one closest to the cowl is pre-filter and the one closest to front end is post-filter--chris