Fuel system question.

[Nick7.3]

I did an irate regulated return with 3/8 fuel lines all the way around with a sump and a filter head that I got from peterbilt that uses the ff105 filter before the pump (walbro255). Parts guy said it was a 30 micron filter. It has no water drain valve on it and my question is does it still seperate the water out of the fuel? Is a 30 micron filter ok for longevity of the fuel pump?

 

[PsRumors]

The ff105 is just a filter, it will not separate the water.

In stock configuration the fuel going to the pump isn't filtered so anything is better. I'd change out the ff105 for a fuel water seperator. You should be able to find one that will filter to 10 - 20 microns.

 

[Lethalthreat7.3]

Filtering before a pump can cause issues, oem doesn't do it and they last for well over a 100k. A water separator would be wise. Personally I use a 2-micron filter(thk Napa Gold 3513) mounted above the hpop(where the original was) before it feeds the heads.

 

[Nick7.3]

Is this something that would be acceptable to use? And since it doesn't have a drain is every oil change a good time to change it?

 

[Lethalthreat7.3]

I'd get one with a drain so it can be checked periodically, no since in changing it early for no reason unless you want to spend the money. I would still highly recommend a 2-micron filter pre-heads tho.

 

[Ron's Power Stroke]

there is a very fine screen in the tank that acts as a filter if you have not done the hutch mod (removed the screen) you most certainly need a 20 to 40 micron filter before the pump if you remove that screen..then a 2 micron after the pump...

 

[Nick7.3]

I ran a sump so I don't have the screen anymore. I use the factory pick up tube for my return line.

 

[Arisley]

Dumping that hot aerated fuel right back in the center of the tank.

 

[greenman01]

The ff105 is just a filter, it will not separate the water.

Wrong. The FF105 is a water separator.

If you want a primary filter with a drain then switch to an FS1212. It will fit the same filter head as the FF105.

 

[PsRumors]

Wrong. The FF105 is a water separator.

If you want a primary filter with a drain then switch to an FS1212. It will fit the same filter head as the FF105.

I don't see anywhere that states the FF105 is a water separator....just a filter

http://catalog.cumminsfiltration.co...rtType=Fuel, Spin-On&partflag=0&currentPage=1

 

[Arisley]

Same here.

 

[greenman01]

I don't see anywhere that states the FF105 is a water separator....just a filter

http://catalog.cumminsfiltration.co...rtType=Fuel, Spin-On&partflag=0&currentPage=1

Yup, you are right :doh:. We've always used FF105's as a primary on the old 3306B's and I thought it was a water separator. I'll be switching them to 1212's in the future.