E85/ fuel system components update

[nelsmar]

Originally Posted by steve99

im not convinced of the buildup or gumming of injectors on e85 , @mkivsoopra pulled his injectors after considerable miles 17,000 on E85 and all clean, ethanol is an excelent solvent. The only possibilty i can think of is some form of additive for cold countries might cause some issue but not seen any proof. Tuner over here @coyote who has been tuniing wrx liberty,s and 86 on e85 for many years never seen any issue with gumming of injectors on e85.

http://www.ft86club.com/forums/showp...1&postcount=33

http://www.ft86club.com/forums/showp...3&postcount=36

http://www.ft86club.com/forums/showp...58&postcount=6

Exactly. Ive always leaned towards it being an additive. My car has 32,000 miles or so on it, 75+% of which are on E85 and my injectors show no sign of buildup. Mind you I had pulled them up once while building the block and thrown them in my ultrasonic cleaner but they had no noticeable buildup on them. I just barely pulled the injectors out last week and there were no signs of buildup. The car has been sitting for a while and I just tore it down to freshen it up this past week.

[nelsmar]

I will likely be pulling the pump out in the next 1-2 weeks and swapping it out so if anyone wants to find a part number for just the filter assembly... lets get this rolling since ill have my cage out anyway!

[nelsmar]

So I figured I would post an update.... 5-8k or so miles later my car still runs fine after letting it sit for such a long period of time. I have ran about 5 tanks of gasoline through it. And countless tanks of ethanol through it since. I have not been flushing gasoline through it for cleaning purposes but simply for testing ECU related bits. In October I plan on doing a massive fuel system overhaul and am still willing to tear my canister open. I should have roughly 40k E85 miles (with a high volume of E85 being through through as I do [b]drive[b/] a high HP car). And ill pay a chunk of the new canister if others are actually concerned and wanting to chip in to replace mine. Ive let it soak multiple times since the original post and now I am really not bothered by the idea of the fuel filter.

I want to say as of yesterday the car had 39,500 miles on it. I'll probably be pulling the injectors to swap out my rails in the coming weeks and ill make sure to run at least 200-300 gallons of ethanol through it without any tanks of gasoline prior to pulling and snap some shots of the injectors. I just recently did about 20-30 gallons of gasoline for some fuel economy testing & VVT tweaking on lower octane fuel, but have switched back to ethanol and flushed about 20-30 gallons through it over the weekend.

[babydriver]

Originally Posted by texasbound972

How has it been running? Curious to see how e85 would fuck up the fuel system. Mine sat at Crawford Performance for a little over 4 weeks with e85 in her. She runs fine since the new built block. Just need to stay away from certain oil like mobil one.

What oil do you suggest?

[kch]

Originally Posted by babydriver

What oil do you suggest?

Mobil super synthetic 0w20 is fine for E85.

[86 South Africa]

Originally Posted by nelsmar

If someone wants to buy me a new filter assembly ill gut mine... I left E85 in the tank for 6 months and then drove the car... (no one needs to explain this is a bad idea, I'm fully aware).

I have had E85 in the tank for ~ 18 months, the current tank is roughly 6 months old. If there is going to be ANY issue with a fuel filter mine should be showing it. It has had ~ 15-20k miles of ethanol pushed through it and has sat for long periods of potentially unsafe fuel.

This makes me wonder... I'm just discovering and loving ethanol. What if I left some in my tank for a while by accident? Let's say I went on holding and left half a tank of e85... What's the best option?

[mad_sb]

All the gumming issues that were discussed at length years ago on evo-m pointed to contaminated fuel being the root cause.

It seems some transporters re-purposed diesel tanks (and some stations as well) without doing a thorough cleaning. The heavy petroleum's (the sticky black / brown goo that people find on the injectors) precipitates out of the spray and collect on the injectors and other surfaces.

Lots of good info over on evolution-m.net

[JFC]

Originally Posted by mad_sb

All the gumming issues that were discussed at length years ago on evo-m pointed to contaminated fuel being the root cause.

It seems some transporters re-purposed diesel tanks (and some stations as well) without doing a thorough cleaning. The heavy petroleum's (the sticky black / brown goo that people find on the injectors) precipitates out of the spray and collect on the injectors and other surfaces.

Lots of good info over on evolution-m.net

99.9% of the time is either the fuel system can not handle the ethanol or the ethanol itself.

Seen and had many cars run e85 and not 1 issue at all ever.

Good luck proving it was the fuel thou, many tanks can go by from when issues started to being noticed.

[NIKOLA]

Originally Posted by texasbound972

How has it been running? Curious to see how e85 would fuck up the fuel system. Mine sat at Crawford Performance for a little over 4 weeks with e85 in her. She runs fine since the new built block. Just need to stay away from certain oil like mobil one.

Just curious..... What's wrong with Mobil One oil?

I just got my valve springs changed out and the mechanic commented on how nice and clean my valves were. I told him that's because I'm running e85. The only thing he questioned was how long my fuel rails will last on e85? He said they would corrode. Though, he said nothing else about any other parts.