Engine/Transmission (1998.5 - 2002) Question on FASS Installation

[ramman-mn]

I am installing my FASS pump system and need to know where to put my fuel pressure sensor on/or near the FASS pump. The instructions don't say. Please Help. Oo. Thanks.



PS - I already have existing guages that connect to the original fuel system (pump). Works fine... Changing to the FASS which connects directly to the VP-44 but need to know what to do with my existing sensors so my pressure guage works.

 

[Don Tanklage]

does the pump body have a gauge port?

 

[JCyrbok]

I installed a T fitting prior to the VP and ran a smaller line to my FP sender. The FASS does have a port on it for fuel pressure too, but I wanted my pressure from as close to my VP as possible. I can post a pic when I get off of work if u want.



The FASS manual should tell u which port is for FP on the FASS.



J-

 

[ramman-mn]

hi

I installed a T fitting prior to the VP and ran a smaller line to my FP sender. The FASS does have a port on it for fuel pressure too, but I wanted my pressure from as close to my VP as possible. I can post a pic when I get off of work if u want.



The FASS manual should tell u which port is for FP on the FASS.



J-

yes could you shoe me that pic please thanks

 

[ramman-mn]

yes could you shoe me the pics please thanks

 

[JCyrbok]

Here are some pics. I ran braided line from the tank through the FASS and to the VP. I Tee'd off the line aprox 4 inches before the VP and ran a smaller braided line to my sender which is mounted near the brake fluid res. Hope this helps. Let me know if you would like other pics or have any questions.



J-

 

[ramman-mn]

thanks

thanks for the pics they helped so thats what i will do thank you

 

[LowFly]

Might check out these vendors for gauge taps:



Vulcan Performance

Power By Poole

or

Mr. Gasket Barb Fuel Pressure Gauge Fitting - JEGS

 

[ramman-mn]

hi dan i just got my fass put on and gauge are running my problem is i have 13 psi at idle and wot 11 psi is this right or do i need a little more pressure

 

[JCyrbok]

give it a day or two may just be air in the gauge sender or line.



My FASS idles between 16-17 and WOT I can pull it down to 13. 5. 80mph on the eway I am at 15. 5.



J-

 

[kompressor]

What guage are you using for the fuel pressure? I recently in stalled the FASS 150 and it has a high pitch whine, is considered normal or should it be more quiet? Thanks for info.

 

[LowFly]

hi dan i just got my fass put on and gauge are running my problem is i have 13 psi at idle and wot 11 psi is this right or do i need a little more pressure

This is what my truck runs... . I’m guessing you have a 150 series, 95 GPH pump? We set the FASS 150's up for about 13-14 PSI (95-150 GPH Respectively) I dont see anything wrong with your pressure.

 

[LowFly]

What guage are you using for the fuel pressure? I recently in stalled the FASS 150 and it has a high pitch whine, is considered normal or should it be more quiet? Thanks for info.

Our pumps will not be 100% silent... but they should be nicely covered up by a running diesel. Maybe just hear a soft whine if you put your head down under the bed about where the FASS is.

 

[ramman-mn]

wrong

yes i am wrong i have 12 psi and when i put the foot on gas it drops done to 8 psi so there is something wrong i had that with my carter pump 13 psi drops down to 8 psi so should i send it back and get my cash back

 

[LowFly]

yes i am wrong i have 12 psi and when i put the foot on gas it drops done to 8 psi so there is something wrong i had that with my carter pump 13 psi drops down to 8 psi so should i send it back and get my cash back

If you wish... you have that right. BUT before you do, i would suggest looking for any restrictions as this would cause an issue like you are seeing. OR a gauge that is reading incorrectly... . do you have an isolator? Electric gauge? Both of thoes cause me more headaches than anything with pressure issues. If you confirm your gauge is reading correclty, I would suggest the "5 gallon bucket test" and see if your pressure stays the same or not.



If you want to put pressure up a bit higher... we have a PS-1020 spring that will put out about 19 PSI. BUT if you have an out side issue that is causeing the pressure drop... . its only going to mask the problem... not fix it... ... .

 

[ramman-mn]

just

If you wish... you have that right. BUT before you do, i would suggest looking for any restrictions as this would cause an issue like you are seeing. OR a gauge that is reading incorrectly... . do you have an isolator? Electric gauge? Both of thoes cause me more headaches than anything with pressure issues. If you confirm your gauge is reading correclty, I would suggest the "5 gallon bucket test" and see if your pressure stays the same or not.



If you want to put pressure up a bit higher... we have a PS-1020 spring that will put out about 19 PSI

 

[ramman-mn]

dan fass

i have done all of the aboveand tried 4 gauges and come up with the same all of theme but like i said if i hook up my carter pump its13 psi drops down to 9psi but the fass is 11 1/2 and drops down to 8

 

[LowFly]

i have done all of the aboveand tried 4 gauges and come up with the same all of theme but like i said if i hook up my carter pump its13 psi drops down to 9psi but the fass is 11 1/2 and drops down to 8

How do you have it hooked up? Using the stock filter head? Any extra filters? It this the FASS or HPFP? AND if you have the FASS what series do you have? The 95 Series or 150 Series? I just need to know how to proceed with this... .

 

[ramman-mn]

dan

i have my fass hooked right to vp-44 no extra filters and the fass is HPFP and i have 95 Series

 

[LowFly]

i have my fass hooked right to vp-44 no extra filters and the fass is HPFP and i have 95 Series

OK... so you have a 95 GPH HPFP..... that does change things.....



Have your dealer call me with your serial number.....