E85 plugging fuel filter - Lightning Forum | LightningRodder.com
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post #1 of 26 (permalink) Old 05-14-2019, 05:20 PM Thread Starter
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E85 plugging fuel filter

Anyone have any idea's on why E85 is plugging my fuel filter? I have a complete fuel system for running E85; from the pumps, lines, fuel filter, fuel rails and injectors. I have a stainless Fore fuel filter which is getting plugged up after running about 3 tanks of fuel over the summer months. Is the E85 breaking down and thus clogging the filter? Do I need to add some type of fuel stabilizer?


Any idea's anyone?

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post #2 of 26 (permalink) Old 05-14-2019, 05:40 PM
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I have been running E85 for years and honestly haven't had an issue. I have had it sit for awhile too with it in the tank. I know I wasn't much help but hopefully someone has some direction for you. Maybe try a different brand fuel filter? Good luck!

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post #3 of 26 (permalink) Old 05-14-2019, 06:53 PM
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Have any bare aluminum in the fuel system that the E85 comes in contract with?

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post #4 of 26 (permalink) Old 05-14-2019, 09:57 PM
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By bare aluminum...that means aluminum that ISNT anodized inside the fuel components.

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post #5 of 26 (permalink) Old 05-14-2019, 10:16 PM
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Quote:
Originally Posted by Jeffv333 View Post
By bare aluminum...that means aluminum that ISNT anodized inside the fuel components.
Correct. And for those whose lovin their water/meth setup...methanol dissolves AL as good as ethanol does.
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post #6 of 26 (permalink) Old 05-14-2019, 10:21 PM
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Originally Posted by Leeproctor83 View Post
Correct. And for those whose lovin their water/meth setup...methanol dissolves AL as good as ethanol does.

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post #7 of 26 (permalink) Old 05-15-2019, 06:18 AM
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Quote:
Originally Posted by Monsterpost View Post
Anyone have any idea's on why E85 is plugging my fuel filter? I have a complete fuel system for running E85; from the pumps, lines, fuel filter, fuel rails and injectors. I have a stainless Fore fuel filter which is getting plugged up after running about 3 tanks of fuel over the summer months. Is the E85 breaking down and thus clogging the filter? Do I need to add some type of fuel stabilizer?


Any idea's anyone?
Are you sure it's the E85 breaking down, or is it "cleaning" your fuel tank? E85 will dissolve whatever gunk is in your fuel tank and send it along. I was pretty lucky in that my fuel tank was spotless when I switched over to e85. Looking into my tank, I could see bare clean metal all the way down to the bottom. Even still, I changed my fuel filter once a season for the first two years. It was always clean. I run a 6 micron filter from Fuel lab. I'm not sure what micron level Fore uses. Anyway, it might be worth dropping the tank and cleaning it out really well if it is dirty. Otherwise the filters will do that for you, just might take a few tanks or more and several fuel filters.

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post #8 of 26 (permalink) Old 05-15-2019, 07:05 AM
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Quote:
Originally Posted by Leeproctor83 View Post
Correct. And for those whose lovin their water/meth setup...methanol dissolves AL as good as ethanol does.



Wonder if different grades of aluminum react different?
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post #9 of 26 (permalink) Old 05-15-2019, 07:12 AM
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Quote:
Originally Posted by Jamie V View Post
https://youtu.be/xkob6fBNrOg

Wonder if different grades of aluminum react different?
Wow! That’s vid is interesting. Mabe methanol is harder on Al than ethanol... or like you said Mabe different types of Al react differently.

Last edited by Leeproctor83; 05-15-2019 at 07:23 AM.
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post #10 of 26 (permalink) Old 05-15-2019, 07:31 AM
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Here's a picture of inside a E85 fuel cell that was said to be made with 5051 aluminum.
Attached Images
File Type: jpg cell.jpg (651.8 KB, 58 views)

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post #11 of 26 (permalink) Old 05-15-2019, 07:45 AM
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Originally Posted by Certified Drunk View Post
Here's a picture of inside a E85 fuel cell that was said to be made with 5051 aluminum.
That appears to be red oxidation. Which would indicate iron/steel rather than the white oxidation/corrosion common to Al. But Iím looking on my tiny phone screen. And perhaps the fuel stained the corrosion a red/yellow color??
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post #12 of 26 (permalink) Old 05-15-2019, 07:48 AM
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When I switched to e85 last year,my truck had 61,xxx miles. The only thing factory left over was the fuel tank itself ( i have a fuel system). I went through (3-4) 10 micron filters within the first 500 miles just to be on the safe side. The first filter was changed out after about half a tank and it was black. 2nd filter was like a dark shade of gray. The rest were okay but I changed them out anyway.

I plan on running last years filter for the first 1000 or so miles this year,when my engine gets installed. After that I will swap out the fuel filter again prior to going back to e85.

Have you tried getting your e85 from somewhere else? Maybe its the source you are getting it from?
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post #13 of 26 (permalink) Old 05-15-2019, 07:51 AM
2.9 Whipple E85R A1 Transmission
 
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It was black before I cleaned it.
I let the fuel filter dry out and it was plugged from a grayish powder.

I coated the tank with KBS tank sealer, so far zero issues.

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post #14 of 26 (permalink) Old 05-15-2019, 08:51 AM
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Do you need to modify the fuel tanks if you are using E85?

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post #15 of 26 (permalink) Old 05-15-2019, 09:22 AM
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Just like CD, my fuel looks the same at the bottom but more white. In my experience with E85, it made good power for what it's worth. Even though with a clean fuel cell, new before and after filters the only problem I had was gunk around the tip of my new ID 1050X injectors. Not much but just a little bit enough to notice.

My cousin with his L, when he ran E85 in a all stock fuel system, his injectors would plug at like 3-4 fill ups. I believe the tank was being cleaned out and sending all that junk to injectors.

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