Engine/Transmission (1998.5 - 2002) FASS user question

[BPINE]

Has anyone had any trouble tieing the FASS system directly into the fuel pump circuit with the wire they supply in the kit. I remember years back it would burn up that circuit in the ECU from to much load with aftermarket pumps drawing to many amps.

 

[FastEddie0]

If you buy the kit from Doug at Advanced Diesel www.smokindiesel.com he modifies the wiring harness and adds his own relay and fuse... that's what I've got on mine and know many others with Doug's modified harness... no problems yet...



Call Doug, he won't steer you wrong.

 

[BPINE]

Doug made a very nice harness for the old PE pumps he used to carry.

 

[Cliffman]

BPINE and I installed the FASS system last night. We used my existing relay from the Interprise helper pump system. We left the old system in place just in case something go's wrong with this one. Ran the fuel line to the back of the OEM filter housing. Good thing we did because the supplied fuel line wasen't long enough to go all the way to the injection pump. Now I have 14/15 psi at idle and 14 psi at cruising. With the comp on 5x5 I couldn't get it lower than 12 psi. The product it's self is very high quailty. The instructions could use a little help and it wouldn't hurt to add a 90 connector for the return line and a few more feet of fuel line to the kit. Took us 2. 5 hours to install. All in all I'm very happy with this product.

 

[CEkstam]

Pump cavitation

Cavitation is a way of life for a pump operating under a vacuum or a pressure flow inadequate to meet the demands of the pump. The FASS is no different. The FASS does provide a high pressure flow to the injector pump, however it lacks the features that remove the air/vapor from the fuel at these higher operating pressures and flows.



The FASS depends on flotation to remove the entrained air and fuel vapor produced by its own pump cavitation to get the air out of the system. This is expected to take place with the return flow of fuel through a pressure regulator valve. This valve maintains a pressure to the engine by restricting the return flow to the tank. For the FASS to maintain a high pressure flow to the engine, the regulator litterly blocks off the return to the tank channeling all fuel and air/vapor to the engine.



The FASS was as admitted in Missouri State Court, designed by altering the blue prints of the Fuel Preporator (old style Fuel PReporator) and has 17 identical as well as interchangeable parts. As the inventor of the Fuel Preporator and having examined the FASS and having tested the FASS under all operating conditions and numerous pressure flows, I can tell you that the FASS WILL PASS air and vapor to the engine under these operating conditions.



I hope this has been helpful.



Charles L. Ekstam

 

[PRout]

How does your unit avoid this condition?

 

[Cliffman]

Doesn’t FASS stand for "Fuel Air Separator System"? So I'm assuming that the air is some how separated from the fuel by the time it gets to the injector pump.

 

[Mille4212]

Preporator where does the air go once its removed then? And I'm just wondering wouldn't the pump cavitate when removing air? And also what is the warranty on the PREPORATOR? Thanks for any info you can provide.

 

[CEkstam]

air/cavitation

As I stated, all pumps operating under a vacuum or a pressure flow insufficient to meet their demands can be subject to cavitation and the following production of vapor.



To answer you question as to where does the air go concerning the Fuel Preporator, the entrained air that is carried into the system by the fuel and the vapor produced by pump cavitation is separated and sent back to the tank. The Fuel Preporator system and especially the NEW Preporator has a number of special and patented features that put it way above any other system.



As long as the Fuel Preporator has the slightest positive flow output, it will separate air/vapor from the fuel. If you are in the South Beach area this next week, come by our booth at the Miami International Boat Show. You can see the Preporator working on our Demonstration Stand. I think you will find it very interesting.



Also, our new add should be soon if not already by on the TDR and in the magazine. We will also be releasing a new version of the Preporator made especially for the pick-up truck market very soon!!!! If small and powerful is good, this will be very very good, WATCH FOR IT!! Or come and see it at the Boat Show.



Thanks,



Charles L. Ekstam

 

[Cliffman]

Went to fuel up today and all of a sudden now I'm having problems getting fuel in the tank. Dang nozel keeps shutten off right after I start it. Splashed fuel all over the side of my truck. Never had that problem before the FASS system. What the heck could we have done wrong?

 

[GIT-R-DONE]

Cliffman, you have to now shut off the truck to filler up now, since you installed the FASS. That is the amount of fuel being returned to the tank... ... volumes of it huh? That tells me the VP 44 is getting cooled/lubricated too. Thats a good thing... .....



Don

 

[Cliffman]

Wow . That is a lot of return fuel. On cold days I usualy leave it runnen while I fill it up and tonight was no different. I did turn it off after a few click off's and finally got it to full up on the lowest setting. I allways full up at the "big rig" pump which puts out a lot more fuel. Thanks for the feed back

 

[CEkstam]

Cliffman,



Installing a high flow fuel system that has a high return flow back to the tank with out properly considering and solving all of the potential installation problems leaves the customer with a problem to solve. Taking a short cut rather than doing it right from the beginning creates the problem. At Fuel Preporator, we recommend that you install a separate return line port in the fuel tank to handle the return flow. This will eliminate the problem you described. As we release new products in the very near future Fuel Preporator quality will continue to be the accepted standard.



Charles L. Ekstam

 

[SteveE]

FASS noise

Friend just installed FASS system and had a noise coming from pump and tank when running.



Pulled the basket for fuel pick up and it was covered in black sludge material with strings like fiberglass. This was the restriction causing the cavitation noise.



Cleaned pick up screen and now, no noise, runs great.



Steve

 

[Cliffman]

Wonder where the sludge came from????? Did you have to drop the tank to get to the screen? That must have been fun

 

[BillGotthelf]

The black sludge material is the algae that grows in diesel. Fuel that sits in the tank with no additives will grow diesel. If you stop and buy fuel from a station that doesn't sell much diesel you could get some. If you look at your fuel filter element when you change it sometimes you can see the filter paper is black-same algae.

 

[Cliffman]

Hmmm, though algae was green. Ya learn something every day I guess...

 

[Uncle Jack]

I'm new to this. LP pressure is 0 with truck running (from 8 PSI before start), so ordered a FASS today. Wondering if I should try to install the FASS on some sort of isolation device (rubber grommets?) to keep sound from passing to the frame?

Anyone tried this. . see the need?

 

[Cliffman]

I don't think there's any need for that dude. The pump is pretty quite. What year is your truck? Also, I wouldn't even start it with 0 pressure.

 

[amillstream]

I have to get back near the bed to even hear the pump running.



By the way I called Brad about the noise and he did say that was normal but he was going to send me something in the mail to put in one of the filters, ( I think thats what he said). He said he needed feedback from me when I get it, I said no problem. He said it could help with the noise. I haven't got it yet though.



Great product so far.