I have a late model Mazda 2.5l turbo ready for an oil change. The vehicle sees a lot of short trips but also a couple of longer trips each week that would allow for a full warm up. 5 days a week mileage is 5 miles round trip, the other two are 60 miles round trip.
The manual recommends API...
This is a 7.3 with hydraulic injectors. So the system is tank > primary filter > fuel pump > secondary filter > injectors.
There is a pressure regulator on the secondary filter housing with a return back to the tank. The screen is not serviceable. The entire filter is one piece and snaps...
Yes, the under hood filter is the one with the screen, and again below. The screen is white on a new filter.
I'm not sure how long these cellulose filters will hold up. Both were approaching three years old, so age could have something to do with the drop in pressure.
To clarify, the...
Likely so. One of the two filters was giving me a pressure drop. More than likely it was the secondary filter under the hood. But I always change both at the same time.
I don't remember the part number on the filter I tried. I may give that one a shot the next time around.
I think the flow rate for this fuel pump is quite a bit less, 50 or 60 GPH if I recall.
The BF1212 was the filter that shipped with the pre pump kit I installed. I tried a Donaldson filter after the 1st filter change and saw a pretty dramatic drop in post filter fuel pressure when under load with the new Donaldson. I switched back to the BF1212 and problem solved.
The kit is...
Agreed. I have pump fuel going into a transfer tank which has a filter, going into a bulk tank which has a filter and then into the truck tank. And you can still see contamination in the primary.
This truck was purchased new by my father and I fully intend it to be my son's. Three generations...