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someone on this forum a while ago had the white powder residue found in our racors analyzed by a lab. i forgot what they found it to be. i did a search but could not find it. as i remember i think this stuff was a result of filtering e-10 through a 10 micron filter and is beleived to be getting past a 10 micron filter and glogging up our vst's. anyone know what it is?
I'm curious too. I filtered some suspect/old e-10 fuelinto my car from some poly boatjugsusing a coffee filter in the funnel. Went thru 3 filters doing ~5gals of gas because they would clog up, the fuel was milkish white. The weird thing is the filters wouldn't even burn when I tried to dispose of them. [img]../images/emoticons/confused.gif[/img]
__________________ Any Port in a Storm!....currently seeking shelter.
As I recall the situation, it was a white substance that was found on the VST pump inlet filter. The lab report said that it was sodium sulfate. Again, this is to the best of my recollection.
someone on this forum a while ago had the white powder residue found in our racors analyzed by a lab. i forgot what they found it to be. i did a search but could not find it. as i remember i think this stuff was a result of filtering e-10 through a 10 micron filter and is beleived to be getting past a 10 micron filter and glogging up our vst's. anyone know what it is?
I was the one who had my vst filter checked by a chemical lab and found that the white substance was sodium sulfate-the salt of sulfuric acid and not aluminum oxide which many guessed it was.I did not want to think my aluminum tanks were being eaten by ethanol(I would buy a kayak if it was).The lab will not let me post the results but if anyone wants to check their vst filters the lab is called Imr test labs- imrtest.com and the cost was $250 for peace of mind
Sodium sulfate. I had the same problem. I created a fuel polishing system that recirculates my fuel thru a 3 micron filter to remove all residue. I run it for about an hour after every fill-up. It works great.
I'm not sure exaclty what is going on in your engine... however my father in law just returned from a yamaha school (he is a mechanic) where they went over the new problems with E10. They said not to use the pink/red stabilizer in the fuel anymore. It doesn't react well with E10 and causes a bacteria growth that is small enough to go through the filters but over time gets clogged in the fuel injector. The bacteria which is in the form of a white powdery substance can be found throughout the engine. The stabalizer that is green/black is ok. They recommended high test fuel with no stabalizers.
He had me drain my tank last night because I keep stabalizer in my engine. May be something to consider. I hope you get your problem worked out.
Sodium sulfate. I had the same problem. I created a fuel polishing system that recirculates my fuel thru a 3 micron filter to remove all residue. I run it for about an hour after every fill-up. It works great.
someone on this forum a while ago had the white powder residue found in our racors analyzed by a lab. i forgot what they found it to be. i did a search but could not find it. as i remember i think this stuff was a result of filtering e-10 through a 10 micron filter and is beleived to be getting past a 10 micron filter and glogging up our vst's. anyone know what it is?
I was the one who had my vst filter checked by a chemical lab and found that the white substance was sodium sulfate-the salt of sulfuric acid and not aluminum oxide which many guessed it was.I did not want to think my aluminum tanks were being eaten by ethanol(I would buy a kayak if it was).The lab will not let me post the results but if anyone wants to check their vst filters the lab is called Imr test labs- imrtest.com and the cost was $250 for peace of mind
Do have any ideas on what the source of the sodium sulfate was?
It's pretty likely an emulsifier. They don't mix well, so they cause blobs that can clog filters, injectors and cause carbon buildup. Some marine fuels add them, others are aftermarket additives. Not all fuel additives are emulsifiers.
GM experimented with emulsifed fuel and discovered it was an unholy mess. There is an SAE report on the testing.
__________________ Bill Lindsey
VP of Marketing
Star brite, Inc
Fort Lauderdale, FL
22' EdgeWater / 225 Yamaha
To twentyfourseven!
Very simple. ON a 2x2 peice of plywood I installed a Racor 3 micron screw on fuel water seperator filter then a primerbulb then a carter electric fuel pump(IN that order from left to right). I connect the suction side to my fuel supply line coming from gas tank then I put the discharge end into the fill side of my gas tank. Prime then flip the switch. It simply circulates my fuel thru the 3 micron filter. I also use it to transfer the fuel from boat to truck at end of seaon.
I am curious about the emulsifier comment. Forgetting the E-10 problem for a moment, we all may end up with some unwanted water in our tanks from a variety of sources. Are the newly formulated water removers such as E-Zorb for ethanol considered emulsifiers? Should we not be adding any water removers on a maintenance basis and if so how do we tell if they are emulsifiers?
white stuff in fuel filters. 
