alright so i just picked up a 95 dodge for 2500 bucks. something is screwy with the fuel system. If you fill the fuel filter prime it with the hand pump start it it runs but not great then after a while the filter drains and it shuts off. it has a new pump and new check valve on the injection pump return line. and i know its not a hose from the tank to the pump because i have a dummy hose that i put on from the tank to that just to make sure.

I dont want to be sitting her for says trying to find out where its leaking in air or what not so im thinkin about goin with a FASS system

does anyone have one on there 12v?

i have installed one on a 2004 24v and that was cake.

if i run the FASS from tank to injection pump is it ok if all the old lines just sit? because it will bypass the whole pump and stock filter location.

thanks guys

 

sounds like you might need to drop the tank and check for a clogged strainer

 

I know of a few 12v trucks running a FASS system due to the stock 12V LP not being able to supply the required amount of fuel to a highly modded engine. If the engine isn't over 600hp and need extra delivery I would suggest just replacing all the lines because your going to if you install the FASS anyway? So to answer your question yes it will work fine but IMO it would be a waste of $500-$600 if you didn't need that kind of delivery.

 

I agree with WildBill. Reckon you've got something clogged up in the tank.

 

Wow $2500 is a steal. Is it in good shape?

 

Dont waste your money on a FASS...as Ratsin said, u dont need it on a 12V

Have you taken the filter housing off and apart?? There are some orings in there. Is it visibly leaking fuel anywhere?

Also, another thing that comes to mind, you might want to replace all the fuel lines (two at the front and two back at the tank). And yes, you can bypass the stock steel lines if you so desire (I would plug them off just in case you have to return it to stock).

 

4doogie:

I have a FASS 180 GPH System on my 1996 Dodge CTD 12 valve. Mine is on there because the stock Cummins 12 valve fuel system was NOT sufficient enough to support the H.P./TQ I am at right now.

To answer your question, YES,.. you can run the FASS from the fuel tank all the way up to the P-7100 with no problem. My engine builder/shop (Scheid Diesel) eliminated my fuel strainer/fuel heater, fuel filter housing/canister and just left the stock steel/metal lines in place but we did cap them off. If you leave the stock lines there "4doogie", be SURE TO CAP THEM!! If you don't, when you fill the tank, the diesel fuel can and will "drain back" down the stock lines and come out near the front! We just used an Aeroquip Compression Fitting at the point where the metal lines end (just under the drivers door) and capped it with a -6 female and -6 male end cap. I have not had any problems since doing this and you can set the pressure up to 40-50lbs. Mine is somewhat higher at about 60-65lbs with the FASS 180 GPH Pump.

Hope this helps you some.

Take care and good luck!

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John_P

 

Great info for sure John, but you failed to mention in the post that you are at 800 HP !!!

 

Dr. Evil:

That is true, but all "4doogie" has to do is look at my signature!
Just kidding buddy,.........actually I know several Dodge CTD 12 valve owners that are way below me in H.P. and have done what I described and "4doogie"
was asking about. If "4doogie" needs a new plastic in-tank "canister", possibly a new fuel line (if it is corroded or plugged) the cost of those parts will be more than a FASS System. I know because I had to do it on mine before all these recent mods and upgrades.

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John_P

 

John, Id sure like to see your truck in person...thanks for the info.

 

Dr. Evil:

You are welcome to look it over good at any diesel rally or event and I attend ALOT of them! I'll take you for a ride in it too if you want.

If you plan on being at any of the below listed events please do not hesitate to look for me:

April 7th- Rockingham, N.C. ("PINKS-ALL OUT Drag Race")
April 14th-Rockingham, N.C. (Mopar at the Rock/DHRA Drag Race)
May 11th&12th-Bowling Green, Ky.(T&S Performance Rally/Drag Race)
June 1&2-Indianapolis, Indiana (Thunder In Indy)
July 20, 21st-Denver, Colorado (ATS Truckfest and Drag Race)
August 24, 25& 26th-Terre Haute, Ind. (Scheid Diesel Extravaganza)

There is some more I know I have forgotten too!

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John_P

 

John,

I might be able to make Denver...

 

Dr. Evil:

Well when it gets closer I will remind you then buddy! Somehow, we'll get together.

Thanks.

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John_P

 

I may have to take you up on that offer John - thanks !

 

Sounds like you have air leaks in there someplace still. Ive done a bunch of replumbing in the fuel system since I did this veggie conversion. To make the conversion work I had to move the fuel filter from the pressure to the vacuum side of the fuel lift pump so Im seeing more air coming up out of the fuel under vacuum. I picked up a racor 490 filter thats rated at 90gph (more than needed for 500hp) and replaced the metal lines and stock fuel pickups with hydraulic hose and vulcan draw straw 2's.
The advantage to using a FASS is having positive pressure from the tank forward and handling entrapped air better than the stock setup will. It would be self-priming and no more worrying about vacuum leaks, etc. Its not cheap and I dont know how long the FASS motors last though. The OEM pump is pretty reliable and it pumps a fair amount of fuel.