Makes me nervous as I just dropped a couple of grand on a new fuel system for E85... I'd get those injectors cleaned and fill the next 6 tanks up from your old station and see what happens. If all is good, find a chemist to figure out the difference between the two stations E85 ;-)
Anyone seen black "goo" build up on their injectors from E85?
- Thread starter MalcolmV8
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I was always under the impression that the black goo comes from the other 15 percent of the fuel. Not the ethanol. Ive always ran a tank or two of 93 through the system during the season along with going through a tank before i store it. Then I fill er up and store it with the 93. That has always cleaned out the system for me.
Never had an issue here in Dallas. The only time I have seen anything like that it was the station having bad fuel.
Think I'll do something similar.
what brand pump?
FWIW - I've run E85 for near 6 years, never an issue with this black goo, never run anything but E85 in the car
Walbro. It's been a while but I think it's F90000267. It's rated 450 lph and is E85 compatible. it's commonly referred to as the 465 or 455 pumps depending who you ask.
Update: I had the injectors flow bench tested and cleaned. The shop said they were a little dirty but not bad. True it had that black stuff on it and was kind of nasty looking but the flow was still pretty good. I then put them in an ultra sonic cleaner to completely and thoroughly clean them out as well.
The car now idles almost 1 A/F point richer in open loop so the injectors are definitely moving a little more fuel than before. However it did not cure the original problem that prompted me to remove them. So while they were dirty it was not causing me any real issues. Based on this I'd think simply tossing a bottle of injector cleaner in two to three times a year should be plenty to keep them clean.
So the car is still breaking up under load? Is it in all gears on only in certain ones?
Take a look at your TPS sensor again. At this point, it wouldn't hurt.
http://www.modularfords.com/threads...only-(video)?p=1966026&viewfull=1#post1966026
http://www.modularfords.com/threads...only-(video)?p=1966026&viewfull=1#post1966026
Malcolm did you ever look at my injectors when you had my car?
I can say when I had the motor out of mine last time I never disassembled the blower/intake so I can't comment on what my injectors look like. I guess with the TVS though I could have all 8 injectors out in just a few minutes. ;-)
I can say when I had the motor out of mine last time I never disassembled the blower/intake so I can't comment on what my injectors look like. I guess with the TVS though I could have all 8 injectors out in just a few minutes. ;-)
ok, ruling that out as a potential source of the issue then.
What fuel injector cleaner do you all think would be best? I don't have a pump gas tune if not I would switch every so often. I get pretty consistent e85-87 fuel in town. Would the occasional top off with a gallon of 93 be helpful?
I have physically looked at the TPS sensor as well as data logged it and all looks fine.
You know I don't recall exactly. I could go back and look at the pics because I did take quite a few. I don't think I pulled your injectors or rails, there was no need I don't believe. Yes you could have yours out in minutes, my passenger's side took me over an hour and half to get back in and that was with a friend helping half way through because I was just fighting a loosing battle trying to lift the blower and get injectors in etc. on my own. I can't even tell you how much I've come to hate this crusher inlet!! I'm so dang ready to just cut it in half and make it removable. If spring wasn't just weeks away I'd be cutting that in half as we speak
lolDon't even have to get close to WOT, just enough throttle to load up the engine, like going up a hill and want to slightly accelerate and maybe pass a car and boom lean. Really lean like bucking and missing and hardly running lean. The crazy part is data logs look great.
You can see on a data log the TPS shows exactly where I increase throttle, you can see MAF counts go up as expected, you'll see the pressure drop across fuel injectors stays right in the 39.xx range as my fuel pressure goes up to compensate the diminishing vacuum (car gets into maybe 1 or 2 lbs of boost at most), you can see injector duty cycle increase for extra fuel, short term trims show it's commanding .98 or so (open loop very light throttle as mentioned) yet you'll see wideband peg 1.20 lean and car misses and bucks.
I was initially convinced it wasn't getting spark. I pulled all the plugs (cursed my crusher inlet some more) and put all new ones in gapped at .028 which is what I've been running. No change. Then I was convinced it wasn't getting fuel so I pulled the injectors, saw the black goo and figured oh that must be it. Cleaned them and while I can tell it improved their spray at idle etc. the issue still exists.
I've been trying to think back to recent changes. So I've had the J&S Vampire unplugged since the new build since it's 100% E85. Maybe the harness as vibrated and worked its way back the box under the seat and is partially contacting and causing ignition coils to do weird stuff. It's a stretch but I'm lost, going to check tonight.
The other change is that I cut the EGR sensor input wire to my ECU. I think it was pin 65 from memory, will have to look it up again and connected my wideband output there. The reason is I've been playing with a Quarter Horse recently (it's not in there now) but when you do the Quarter Horse can use the EGR 0-5 volt input to read your wideband. Kind of slick. Maybe that's somehow causing me issues so I'm going to undo that tonight too.
Short of that I'm lost, compression test is a good 110 which sounds low but it's because of my cams and a late closing intake valve and valve overlap from what I've read. So normal for my motor.
I also noticed when just cruising a long distance on the interstate at 70 mph holding a very steady speed at random the car would start to pulsate a little. I could see the wideband gauge swinging from 13 ish to 16 ish or so and also my vacuum gauge was pulsing between 8 and 10 inches give or take. It happened a few times and we grabbed the laptop from the back seat and hooked it up and of course the car wouldn't ever do it again so I've not gotten a data log of that.
I do think it solidifies something is definitely not right.... just what is it? Appeared out of no where one day suddenly it seems.
I probably wouldn't top off with 93 or anything myself because of how it dilutes the E85 and throws off the A/F. I haven't looked into injector cleaners yet but will once I get the car running properly again.
I researched that a few years back, and the only thing I found was a mitsubishi evo forum where sure enough one of their E85 users pulled his injectors and there was the goo very similar to your picture. If I remeber correct, he was in a northern state of the country and was running ID1000s.
Personally, no issues here for years, all Texas based E85. No additives used and very few swaps to gas over 5 years. Of course I've never actually pulled injector, but if sudden lean conditions are a byproduct....that has not been an issue at all. Car runs bonkers perfect
Personally, no issues here for years, all Texas based E85. No additives used and very few swaps to gas over 5 years. Of course I've never actually pulled injector, but if sudden lean conditions are a byproduct....that has not been an issue at all. Car runs bonkers perfect
here's that evo thread.....was a Pa. car and ID2000s.
http://www.evolutionm.net/forums/ev...6458-3-tanks-e85-look-my-id2000-s-unreal.html
http://www.evolutionm.net/forums/ev...6458-3-tanks-e85-look-my-id2000-s-unreal.html
Malcolm,
There is a guy having a very similar problem that posted in the Terminator section. I say similar because he states he/his tuner have logged alot and everything looks normal.
http://www.svtperformance.com/forums/showthread.php?1102458-03-Cobra-lean-issue-Help
There is a guy having a very similar problem that posted in the Terminator section. I say similar because he states he/his tuner have logged alot and everything looks normal.
http://www.svtperformance.com/forums/showthread.php?1102458-03-Cobra-lean-issue-Help
I bet this is distillery related. Contamination related.
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