WTF is this shit?

[petie6464]

Braided stainless, the -12 line is a couple of years old. I add a little Marvel to the fuel.

Alcohol will attack neoprene lined hose aka; braided stainless outer type hoses. I always used Teflon I.D. hose with Alcohol. None the less I've never seen something like that, looks like pancake batter. I have no idea.

 

[2Driver]

Lots of talk on it over in the “hull truth” forum site. Google yellow paste in fuel filter

 

[JDKRXW]

In my secondary fuel filter, AV gas, MFI deal.
Found it when I started leaning out legging it.

My total wild ass guess is; you pissed someone off lately.

 

[boatdoc55]

That isn't consistent with fuel lines, I would guess towards the bottom of the AV gas tank? Sucked up the sludge, then it was suspended and luckily your filter caught it. Stir up your tank then suck out some of your gas and put it in a mason jar and let it sit. See if the particles come out of suspension? Or even better if you still have some in one of the 5 gallon jugs... At least that way you can identify the source is before your tanks...

Ah Yes, the good 'ol mason jar trick!! I don't know how many times I've shown customers their "clean" gas out of their boat!!

 

[motormonkey]

Looks like dirty gas can or from supply tank. I'd notify the airport your buying this from to have them check.

 

[500bbc]

a lil bit, and boy would that tear up a cylinder.

A cheap microscope would confirm that.

Not DE, high odor of some type of solvent

 

[Cdog]

Hope you figure it out. Man I really enjoyed that boat when I had her. 20 years goes by in a flash.

 

[500bbc]

Hope you figure it out. Man I really enjoyed that boat when I had her. 20 years goes by in a flash.

View attachment 1023596

It's been updated a little..

 

[checkrdpast]

In my secondary fuel filter, AV gas, MFI deal.
Found it when I started leaning out legging it. View attachment 1023303 View attachment 1023304 View attachment 1023305 View attachment 1023306

Looks like fuel from Pemex in baja

 

[boatdoc55]

It's been updated a little.. View attachment 1023602

A LITTLE A puffer and a hat, ya I'd say a little!!!!!

 

[River Runnin]

Tank sludge of additives? ---- Looks like Talc!

 

[JUSTWANNARACE]

I have seen this when the "altitude inhibitors" start breaking down or separating in the tank its pump from(where you hot the AV gas". Especially if there tank is getting low. I have seen this stuff eat cyls and rings in 2strokes. That's why I refuse to run AV, I'll run a mix of 110 on 91 before I will ever run AV again.


But that doesnt explain why it's in the farthest filter from your fuel tank!

 

[River Runnin]

But that doesnt explain why it's in the farthest filter from your fuel tank!

micron size of the filter....and looks like it's suspended in the fuel for that amount?

 

[500bbc]

micron size of the filter....and looks like it's suspended in the fuel for that amount?

45 micron SS pleated filter.

 

[OCMerrill]

45 micron SS pleated filter.

Yea that filter said the fuck you don't, just sit right here.

 

[500bbc]

So, what's everyone's take?
Wasn't in just the surge tank, it's in all the tanks and all the jugs.
Gallon pickle jar, shook a jug up and poured into jar through filter funnel.

 

[500bbc]

Small jar filled from fuel jug carefully poured through filter funnel without shaking.
Takes hours for sediment to settle.




l

y

 

[MSum661]

I'd get off the AVgas and start pouring the VP or Sunoco in the tank.
F that. That would piss me off bigtime.

 

[500bbc]

I'd get off the AVgas and start pouring the VP or Sunoco in the tank.
F that. That would piss me off bigtime.

Been fine for twenty years.

 

[DRYHEAT]

Did you ever send a sample for analysis?
At first I thought maybe it was some kind of sealer globed on a fuel tank fitting, but damn that’s a lot. Maybe it is from the fuel.

 

[MSum661]

Been fine for twenty years.

I hope you find out whats behind all that. Maybe somebody dropped in some propylene oxide behind your back....lol.

 

[500bbc]

Did you ever send a sample for analysis?
At first I thought maybe it was some kind of sealer globed on a fuel tank fitting, but damn that’s a lot. Maybe it is from the fuel.

No sample sent, it's sediment in the fuel.
They can test for solids but not ID the sediment. It settles out but goes into suspension when agitated.

 

[500bbc]

Did you ever send a sample for analysis?
At first I thought maybe it was some kind of sealer globed on a fuel tank fitting, but damn that’s a lot. Maybe it is from the fuel.

It's in the jugs too.

 

[DRYHEAT]

It's in the jugs too.

Not good, do you have any other friends that are getting fuel there and have had the same issue?

 

[River Runnin]

pollen!

 

[500bbc]

Not good, do you have any other friends that are getting fuel there and have had the same issue?

No, I'll explain the issue better tomorrow, at least how I see it.

 

[monkeyswrench]

Is there a chance your jugs are breaking down? I thought airports had decent fuel "purity" requirements, but I'm not a pilot.

 

[GOTTBoat]

Like you, I’ve been running AV in my boat, jet ski, chain saw and blower for years without any issues. I didn’t see mentioned but was fuel straight out of the pump at an airport?

 

[76sanger]

My brother's aluminum gas tanks began coming apart and puking this stuff thru the fuel system. Looked like dirt but it was corroded tank material. Boat was an '87 Eliminator with OG tanks. @500bbc How old are your tanks?

View attachment 1023312

that is weird, I have never had aluminum tanks corrode. My 40 plus year old aluminum tanks in my sanger are clean as a whistle. Strange.

 

[Bigbore500r]

that is weird, I have never had aluminum tanks corrode. My 40 plus year old aluminum tanks in my sanger are clean as a whistle. Strange.

I’ve come across 3 cases

My brothers boat, my friends ocean boat, and another friends jet boat. The ocean boat and jet boat actually developed pinhole leaks!

 

[500bbc]

Is there a chance your jugs are breaking down? I thought airports had decent fuel "purity" requirements, but I'm not a pilot.

No, it's in the tanks, didn't use enough to fill with the jugs.

 

[500bbc]

Like you, I’ve been running AV in my boat, jet ski, chain saw and blower for years without any issues. I didn’t see mentioned but was fuel straight out of the pump at an airport?

No

 

[lbhsbz]

No

Where’d you buy the fuel? I’m sure they’d be interested in helping you (and them) figure out what it is, working with their supplier.

 

[kurtis500]

Are you running an Enderle with a mechanical pump and a return to the tank?

1 - is the jar above the clear fuel taken from the jug you filled with? and the dirty one out of the tank from the boat?

 

[500bbc]

Are you running an Enderle with a mechanical pump and a return to the tank?

1 - is the jar above the clear fuel taken from the jug you filled with? and the dirty one out of the tank from the boat?

Yes on the MFI.
Both jars filled from jugs, one jar (large) the jug was shaken (agitated) that put the sediment in suspension, Small jar filled carefully from a jug that was not shaken. No fuel went into the boat from the jugs, didn't/couldn't run it long enough to need refill.
Emails back and forth with PO. Their tank was filled 2/3 hours before I filled up. I believe when their tank was filled it agitated the sediment (whether their fill line terminates at the bottom of the tank or top) putting it into suspension and I just happened to come by before the sediment precipitated. It took longer than that for the test jar to clear, 5/6 hours. Didn't time it. They say they can't check the bottom of their tank. I do understand their position, claims no other complaints. Wouldn't be if no one fueled up well after they filled their tank.
I initially thought it was just in the surge tank until I looked into the fuel jugs with a flashlight and held a bright flashlight next to the bottom of the clear/white jugs to see the sediment.

 

[500bbc]

Anyone know how a gas station fuel tank is plumbed?

 

[DRYHEAT]

Anyone know how a gas station fuel tank is plumbed?

Mine had fiberglass lines from a steel tank. And yes I had a leak.

 

[shan]

Anyone know how a gas station fuel tank is plumbed?

Tube goes down through the top with a turbine pump on the end, so fairly close to the bottom.

 

[500bbc]

Tube goes down through the top with a turbine pump on the end, so fairly close to the bottom.

Is there a way to test for sludge/sediment in the bottom of the tank?

 

[shan]

Is there a way to test for sludge/sediment in the bottom of the tank?

Probably, we haven't ever had to do it. It could be as simple as attaching something to the end of an appropriate length piece of tubing and swabbing the bottom of the UST through the fill port. There are filters at the dispensers, but they aren't fine enough to catch what you found.
Edit: I manage a facility with 17 USTs. There is a triple rinse procedure we use when we change fuel types in a UST. My requirements are much tighter than a typical outlet, maybe even tighter than an aircraft outlet.