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Filter/snotty sock sputtering

Im guess by baffle he meant whats in the bottom of the tank, but I cant be positive..
If so, it keeps the fuel from slashing all around..
 
Rodd said:
the u shaped thing is actually a square. Chris said it is the baffle.

My question is what is a baffle and what does it do? That is what baffles me):h):h):h):h
Click to expand...

Also acts a sump for the pickup tube, and separator, heavy crud stays on bottom of tank and baffle/pan keeps pick up of of the bottom of the pan.
 
Turbine Doc said:
Also acts a sump for the pickup tube, and separator, heavy crud stays on bottom of tank and baffle/pan keeps pick up of of the bottom of the pan.
Click to expand...

When reassembling does the fsu go in the center of the baffle?

Oh and I called everyone and looked online and could not find any aftermarket FSU's. I could find stealer ones for about $350. Thanks for the link Tim. I ordered one from there for $110 including shipping. The only problem is I have to wait a week and a half. I need to look at the positive side. My wife can't go out shopping for a week and a half. :D
 
Just received my fuel sending unit. (Finally). I have one question. It came w/ 2 small o-rings and 1 large. The large goes on the big hole on top some how. Where do the small ones go?

Thanks!
 
Last edited:
Oh, 1 more question. Do I center the big plastic baffle inside the tank under the hole and put the fsu in the center of the baffle?

Thanks!
 
Agree. I'm not sure what the baffle looks like either. I bought my new tank and FSU and looked inside the tank and don't remember seeing anything.

I show Oout of fuel symptoms around 11 gallons into my 22 gallon tank. Not sure what the problem is. Need to drop the brand new tank sometime. I DON"T remember seeing any sort of moveable plastic 'baffle' in the tank.

Does the baffle come with the FSU or the fuel tank?
 
Matt Bachand said:
Agree. I'm not sure what the baffle looks like either. I bought my new tank and FSU and looked inside the tank and don't remember seeing anything.

I show Oout of fuel symptoms around 11 gallons into my 22 gallon tank. Not sure what the problem is. Need to drop the brand new tank sometime. I DON"T remember seeing any sort of moveable plastic 'baffle' in the tank.

Does the baffle come with the FSU or the fuel tank?
Click to expand...
Your tank could be collapsed,or the pickup is not all the way in the bottom,or you got a leak in the pickup tube/hose halfway up in the tank or anywhere upstream of the LP.
 
bison said:
Your tank could be collapsed,or the pickup is not all the way in the bottom,or you got a leak in the pickup tube/hose halfway up in the tank or anywhere upstream of the LP.
Click to expand...

Everything made sense except for that last statement.

How could a leak upstream of the LP show me outta fuel symptoms 11 gallons deep into my brand new 22 gallon tank?
 
Matt Bachand said:
I DON"T remember seeing any sort of moveable plastic 'baffle' in the tank.

Does the baffle come with the FSU or the fuel tank?
Click to expand...

No

It's a plastic tray about 12x12 must be installed when a tank is built, won't fit thru the opening in the top of the tank, centered below the FSU/pickup, sits on 4 plastic posts, and held in place with 4 retainer washers that are toothed to grab the posts, one in my burb had come undone and broke the arm off the original FSU. I suspect a non OEM aftermarket tank may not be baffle equipped
 
Turbine Doc said:
No

It's a plastic tray about 12x12 must be installed when a tank is built, won't fit thru the opening in the top of the tank, centered below the FSU/pickup, sits on 4 plastic posts, and held in place with 4 retainer washers that are toothed to grab the posts, one in my burb had come undone and broke the arm off the original FSU. I suspect a non OEM aftermarket tank may not be baffle equipped
Click to expand...

My FSU keeps bending because the baffle is coming loose. I thought that after I found those washers in the tank the last time I had it down would be the end of my problems. It came loose again and I am only only able to use 2/3 of the fuel in the tank.

I need to drop the tank again. This time I will get pictures.

I am thinking to using some type of glue to keep it down.
 
Rodd said:
My FSU keeps bending because the baffle is coming loose. I thought that after I found those washers in the tank the last time I had it down would be the end of my problems. It came loose again and I am only only able to use 2/3 of the fuel in the tank.

I need to drop the tank again. This time I will get pictures.

I am thinking to using some type of glue to keep it down.
Click to expand...

I think this is my problem too. I havn't dropped tank yet to verify.

Do you have enough room in there to flip it upside down, and glue magnets to it? or perhaps get a magnet with a hole in the middle you could screw it to the plastic baffle?

What a pain in the ass having to drop the tank. The entire reason I let my garage do it for me ... Not paying twice though.....

2 steps forward, 1 step back...
 
Matt Bachand said:
I think this is my problem too. I havn't dropped tank yet to verify.

Do you have enough room in there to flip it upside down, and glue magnets to it? or perhaps get a magnet with a hole in the middle you could screw it to the plastic baffle?

What a pain in the ass having to drop the tank. The entire reason I let my garage do it for me ... Not paying twice though.....

2 steps forward, 1 step back...
Click to expand...

I think you can turn it over however you need to make sure you get the magnets in the right place. Since the floor of the tank has channels you want to make sure you get it in on the baffle where the deepest channels are. Might be a bit difficult.
 
Rodd said:
I think you can turn it over however you need to make sure you get the magnets in the right place. Since the floor of the tank has channels you want to make sure you get it in on the baffle where the deepest channels are. Might be a bit difficult.
Click to expand...

Considering the finish of the tank and the nature of the diesel fuel, you think glue (automotive goop?) would hold it?
 
Rodd said:
Just received my fuel sending unit. (Finally). I have one question. It came w/ 2 small o-rings and 1 large. The large goes on the big hole on top some how. Where do the small ones go?

Thanks!
Click to expand...

The small orings go on the fuel lines.
 
Turbine Doc said:
Snow is correct lift pump mat be compromised, I installed a 10 micron Racor filter in front of my lift pump to prevent crud from taking out the lift pump.
Click to expand...

Hey TD, I've had a couple pepole PM me asking about my lift pump bypass kit. They want to know if the stock style lift pump will have a problem sucking fuel through a filter? What is your opinion?
I have only used a walbro on mine and it works fine.
 
Burning oil said:
Hey TD, I've had a couple pepole PM me asking about my lift pump bypass kit. They want to know if the stock style lift pump will have a problem sucking fuel through a filter? What is your opinion?
I have only used a walbro on mine and it works fine.
Click to expand...

I ran a Heath h/o pump thru tank sock and a Racor 10 micron, and it held it's own most of the time, except WOT and heavy tow WOT, until pump caught up to the steady state demand about 2-10 sec, even a stock GM lift would do it but took forever to recover 20+ sec depending on the size of the hill or how hard WOT I was into it, and then just holding to 1 psi (minimum you really want as sustained IP feed), the Heath h/o holds 3-4 psi after recovery. Walbro never goes below 4 in any situation encountered thus far, 6-7 at cruise speed, 10-12 pulsed at idle.
 
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