dumb fuel filter question

bevans6 · August 18, 2011, 06:56:31 AM

My manual only refers to a "fuel strainer" and a "fuel filter" until it gets to the parts page, where it refers to a "primary fuel filter" and a "secondary fuel filter" So I am all confused. In terms of fuel flow, the strainer is first, then the pump, then the filter. But I have no idea if the primary fuel filter they call out is the strainer (first in line) or the "filter", second in line...

Part two. Does anyone have purolator or fram numbers for these filters?

Thanks, Brian

TedsBUSted · August 18, 2011, 07:11:54 AM

The strainer, or "sock" is the primary filter and located between tank and pump.

Ted

lostagain · August 18, 2011, 07:16:51 AM

I think that it goes like this: fuel strainer/primary, pump, fuel filter/secondary.

On my Courier 96 with 4/71T, I replaced the primary/strainer with a Racor filter/water separator (with the see through bowl, and 110V pre-heater and 12V heater for when running in cold weather, although never used that feature). With a vacuum gauge between it and the pump, so I could tell when the restriction was too much and changed the element. You can drain a few drops of water out the bottom once in a while.

At the bottom of my to-do list is to take it out and install it in the 5C. It is big though, 2 feet tall by 5, 6 inches diameter.

JC

luvrbus · August 18, 2011, 07:24:24 AM

Brian, Purolator # 60096 and 60097

good luck

bevans6 · August 18, 2011, 07:36:31 AM

Thanks everyone very much. I also figured out (duh) that they have different thread sizes so you can't screw them up.

Off to order some filters now...

Brian

rampeyboy · August 18, 2011, 07:56:26 AM

Anything wrong with using a secondary filter in both spots (before and after the pump)?

Boyce

bevans6 · August 18, 2011, 08:03:57 AM

After 2 hours of research I am an instant expert (an ex that spurts under pressure...)

A primary filter has the job of pre-filtering but mostly separating water out of the fuel, so it has a quite different filter characteristic than the secondary filter, which is designed to support high pressure (well, high in the 65 PSI range compared to zero in the primary filter) and actually finely filter the fuel.

plus if you have spin on filter heads the thread sizes are different. 1"-12 on the primary, 13/16" - 12 on the secondary. I have no idea about the elements in the cannister filters, though.

Brian