FASS filtration deception.
Thread Starter
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Joined: Feb 2002
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From: SE PA
This looks like the answer...
http://www.vulcanperformance.com/Dra...shlo-p/dsi.htm
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Joined: Nov 2007
Posts: 4,737
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From: Kuna, Idaho
If the setup you have is just attaching to the doorman fitting on the OE canister then that's probably the issue. The hole is smaller than 3/8".
I gather its not too difficult to get rid of the doorman fitting for a 1/2" fitting like on that link, but you don't use the draw-straw you use the OE pickup still so you don't have any 1/4 tank issues.
I gather its not too difficult to get rid of the doorman fitting for a 1/2" fitting like on that link, but you don't use the draw-straw you use the OE pickup still so you don't have any 1/4 tank issues.
Thread Starter
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Joined: Feb 2002
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From: SE PA
Why is there a 1/4 tank issue with the draw straw?
Vulcan says.. "makes for a super clean and secure installation and brings all the return fuel back into the module for replenishment during low fuel situations."
Vulcan says.. "makes for a super clean and secure installation and brings all the return fuel back into the module for replenishment during low fuel situations."
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Joined: Oct 2005
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From: Dallas area
I had 1/4 tank issues with the draw straw. Install went perfect and everything was great for a while.
Pulling a heavy trailer out of pasture and I bottomed the tank just slightly on a little hill, must have dented the tank just slightly or something but pressures would drop below 1/4 tank when accelerating or slowing down.
Fix for me... Hellman sump, 110% fixed all my problems, great pressure down to the last gallon of fuel.
Pulling a heavy trailer out of pasture and I bottomed the tank just slightly on a little hill, must have dented the tank just slightly or something but pressures would drop below 1/4 tank when accelerating or slowing down.
Fix for me... Hellman sump, 110% fixed all my problems, great pressure down to the last gallon of fuel.
Thread Starter
Registered User
Joined: Feb 2002
Posts: 745
Likes: 2
From: SE PA
I had 1/4 tank issues with the draw straw. Install went perfect and everything was great for a while.
Pulling a heavy trailer out of pasture and I bottomed the tank just slightly on a little hill, must have dented the tank just slightly or something but pressures would drop below 1/4 tank when accelerating or slowing down.
Fix for me... Hellman sump, 110% fixed all my problems, great pressure down to the last gallon of fuel.
Pulling a heavy trailer out of pasture and I bottomed the tank just slightly on a little hill, must have dented the tank just slightly or something but pressures would drop below 1/4 tank when accelerating or slowing down.
Fix for me... Hellman sump, 110% fixed all my problems, great pressure down to the last gallon of fuel.
http://www.dieselbombers.com/5-9l-24...tml#post323627
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Joined: Oct 2005
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From: Dallas area
Took me about 2 hrs to drain tank (using fass pump into containers) drop tank, clean, areas, drill holes, install the hellman, and get it all back together. One of the best fuel system mods I have done. Supports my 220GPH FASS without issue... Now I just wished it separated water. 
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Observing all the signatures here over the years one became jealous of those with those top of the line kilobuck FASS filters.
Now it becomes known FASS actually KNEW their filter system was not as advertised.
Furthermore no ASTM SAE standardized testing was ever performed on the FASS system.
It doesn't matter now if users turn away because FASS has stuffed their mattress with bookoo cash and have learned how to market an unproven widget on the internet. As PT Barnum said there's a sucker born every minute, the internet has provided the vehicle to connect to every sucker in the world in microseconds. A bad product can go viral which implies confidence and legitimization because "so many people can't be wrong", bubbles are made of such.
My thoughts turn to Amsoil which never shows comparison test results to their real competition.
Amsoil tests good against common Valvoline 10w-30 and the like, BUT
why doesn't Amsoil comparison test against Lubrication Engineers, Shaeffers and Cenpeco?
What do Amsoil, Amway, Avon, Fuller Brush and Tupperware have in common?
Now it becomes known FASS actually KNEW their filter system was not as advertised.
Furthermore no ASTM SAE standardized testing was ever performed on the FASS system.
It doesn't matter now if users turn away because FASS has stuffed their mattress with bookoo cash and have learned how to market an unproven widget on the internet. As PT Barnum said there's a sucker born every minute, the internet has provided the vehicle to connect to every sucker in the world in microseconds. A bad product can go viral which implies confidence and legitimization because "so many people can't be wrong", bubbles are made of such.
My thoughts turn to Amsoil which never shows comparison test results to their real competition.
Amsoil tests good against common Valvoline 10w-30 and the like, BUT
why doesn't Amsoil comparison test against Lubrication Engineers, Shaeffers and Cenpeco?
What do Amsoil, Amway, Avon, Fuller Brush and Tupperware have in common?
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Joined: Apr 2004
Posts: 3,241
Likes: 1
From: NW Indiana
Observing all the signatures here over the years one became jealous of those with those top of the line kilobuck FASS filters.
Now it becomes known FASS actually KNEW their filter system was not as advertised.
Furthermore no ASTM SAE standardized testing was ever performed on the FASS system.
It doesn't matter now if users turn away because FASS has stuffed their mattress with bookoo cash and have learned how to market an unproven widget on the internet. As PT Barnum said there's a sucker born every minute, the internet has provided the vehicle to connect to every sucker in the world in microseconds. A bad product can go viral which implies confidence and legitimization because "so many people can't be wrong", bubbles are made of such.
My thoughts turn to Amsoil which never shows comparison test results to their real competition.
Amsoil tests good against common Valvoline 10w-30 and the like, BUT
why doesn't Amsoil comparison test against Lubrication Engineers, Shaeffers and Cenpeco?
What do Amsoil, Amway, Avon, Fuller Brush and Tupperware have in common?
Now it becomes known FASS actually KNEW their filter system was not as advertised.
Furthermore no ASTM SAE standardized testing was ever performed on the FASS system.
It doesn't matter now if users turn away because FASS has stuffed their mattress with bookoo cash and have learned how to market an unproven widget on the internet. As PT Barnum said there's a sucker born every minute, the internet has provided the vehicle to connect to every sucker in the world in microseconds. A bad product can go viral which implies confidence and legitimization because "so many people can't be wrong", bubbles are made of such.
My thoughts turn to Amsoil which never shows comparison test results to their real competition.
Amsoil tests good against common Valvoline 10w-30 and the like, BUT
why doesn't Amsoil comparison test against Lubrication Engineers, Shaeffers and Cenpeco?
What do Amsoil, Amway, Avon, Fuller Brush and Tupperware have in common?
I was NEVER a fan of Fass... never understood why one would pay SO much cash for a big, inefficient, noisy pump...?
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Joined: Oct 2003
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From: Western PA
Dont fret Hoot, your not the only one that got suckered.
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Joined: Sep 2003
Posts: 2,534
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From: Plano, TX
Well here goes.
Since I noticed fuel starvation more than ever, I felt something was wrong. I also noticed she didn't make as much smoke. Hard acceleration gave me the "pop" of fuel starvation. Rarely had that before under the current Smarty and TST settings. The only things that changed in the last 10,000 miles is it turned winter and cold and I switched from the stock FASS WS1001 to the BF1212.
I was thinking the winter fuel and the cold was contributing.
Yesterday I removed the BF1212 and installed a brand new WS1001.
Took it for a hard ride and low and behold, smoke and power is back to where it was before the BF1212. No more "pop" under hard acceleration.
I suppose there is not much we can do if your truck has the mods similar to mine, with the FASS pseudo water separator, since we cannot have a filter with more restriction at that location.
I have a fuel pressure gauge and I was not seeing a drop in pressure. Always around 17 psi. So no pressure drop at the FASS port but a definite performance drop. Not sure why.
Thank you Diesel-Dan.... Looks like you know what you are talking about.
To this day I still find it fascinating that the first generation Duramax trucks that used the same common rail hp pump is able to produce 400-500 hp while sucking fuel through a 3 micron Racor (my old truck) and there was NO LIFT PUMP AT ALL. The GM trucks used large dia. fuel lines from the tank to the HP pump. The only lift pump used is the internal gear rotor pump in the HP pump. We have the same internal lift pump in our Cummins. I guess the Dodge fuel feed system all out blows ..... way too restrictive. Must be from the tank though since we replace the whole fuel line from the FASS to the HP pump with the FASS supplied fuel line.
I could see a future where I run just a pump and an inline filter. For what the FASS is advertised as, I just don't see the justification. It's pump is more just to get fuel through itself than to be an enhancement to the engine.
Since I noticed fuel starvation more than ever, I felt something was wrong. I also noticed she didn't make as much smoke. Hard acceleration gave me the "pop" of fuel starvation. Rarely had that before under the current Smarty and TST settings. The only things that changed in the last 10,000 miles is it turned winter and cold and I switched from the stock FASS WS1001 to the BF1212.
I was thinking the winter fuel and the cold was contributing.
Yesterday I removed the BF1212 and installed a brand new WS1001.
Took it for a hard ride and low and behold, smoke and power is back to where it was before the BF1212. No more "pop" under hard acceleration.
I suppose there is not much we can do if your truck has the mods similar to mine, with the FASS pseudo water separator, since we cannot have a filter with more restriction at that location.
I have a fuel pressure gauge and I was not seeing a drop in pressure. Always around 17 psi. So no pressure drop at the FASS port but a definite performance drop. Not sure why.
Thank you Diesel-Dan.... Looks like you know what you are talking about.
To this day I still find it fascinating that the first generation Duramax trucks that used the same common rail hp pump is able to produce 400-500 hp while sucking fuel through a 3 micron Racor (my old truck) and there was NO LIFT PUMP AT ALL. The GM trucks used large dia. fuel lines from the tank to the HP pump. The only lift pump used is the internal gear rotor pump in the HP pump. We have the same internal lift pump in our Cummins. I guess the Dodge fuel feed system all out blows ..... way too restrictive. Must be from the tank though since we replace the whole fuel line from the FASS to the HP pump with the FASS supplied fuel line.
I could see a future where I run just a pump and an inline filter. For what the FASS is advertised as, I just don't see the justification. It's pump is more just to get fuel through itself than to be an enhancement to the engine.
My suggestion is to hook up your stock filter head and run with these air separation pumps if you feel uneasy about anything. The pressure line coming out of the pump is low flow....or only what the engine is using. So should be easy to keep up with for water removal. So you are not asking your stock filter to do much more work than what it normally did. Just my .02
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Joined: Mar 2002
Posts: 8,311
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From: Holly Ridge, N.C.
I worked for FASS for 3 years (But no longer do) and saw this problem a lot when folks started running a 10um filter on the suction side of the pump instead of one FASS suggested.
My suggestion is to hook up your stock filter head and run with these air separation pumps if you feel uneasy about anything. The pressure line coming out of the pump is low flow....or only what the engine is using. So should be easy to keep up with for water removal. So you are not asking your stock filter to do much more work than what it normally did. Just my .02
My suggestion is to hook up your stock filter head and run with these air separation pumps if you feel uneasy about anything. The pressure line coming out of the pump is low flow....or only what the engine is using. So should be easy to keep up with for water removal. So you are not asking your stock filter to do much more work than what it normally did. Just my .02
Dan:
Good to see you back on the website Sir!
It sure has been a long time since we talked and I have missed you at many of the diesel rallies I attend.You sure took good care of me while you were at FASS and I thank you for that! That 180 GPH pump you fixed for me is still working great Dan! That was almost four (4) years ago now!
I see a constant 40lbs of pressure under all conditions and have never had ANY issues with my FASS pump.
Take care Dan and I hope to see you at an event in 2011 Sir!
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John_P
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Joined: Sep 2003
Posts: 2,534
Likes: 0
From: Plano, TX
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Dan:
Good to see you back on the website Sir! It sure has been a long time since we talked and I have missed you at many of the diesel rallies I attend.
You sure took good care of me while you were at FASS and I thank you for that! That 180 GPH pump you fixed for me is still working great Dan! That was almost four (4) years ago now!
I see a constant 40lbs of pressure under all conditions and have never had ANY issues with my FASS pump.
Take care Dan and I hope to see you at an event in 2011 Sir!
--------
John_P
Dan:
Good to see you back on the website Sir!
It sure has been a long time since we talked and I have missed you at many of the diesel rallies I attend.You sure took good care of me while you were at FASS and I thank you for that! That 180 GPH pump you fixed for me is still working great Dan! That was almost four (4) years ago now!
I see a constant 40lbs of pressure under all conditions and have never had ANY issues with my FASS pump.
Take care Dan and I hope to see you at an event in 2011 Sir!
--------
John_P
) keeps me busy! Fuel doesn't take a vacation! I'm going to try to poke my head back in here more......just getting over licking my wounds of the past few years.
