E85 Injector Issues... Anyone? - Page 4

Andrew7dg · 07-30-2009

Wow, I am glad I found this thread. I am running a set of 1150 FIC on E85 and haven't pulled the injectors yet. I didn't even know there was an issue... My car is running fine.

Is it still OK to run them on E85? What are the issues that they are having running them? besides the black junk which sounds fuel related.

I guess I better pull them to make sure that they are looking Ok

**Shane@DBPerformance** · 07-30-2009

I pulled some 1200s out a car recently and it had the black goo bad. My wifes 1600s with a lot of miles on them with E85 were perfectly clean. I usually get E85 from the Holiday off of 252 and 694.

Andrew7dg · 08-12-2009

Ok Here are the pictures of what I found

I have the 1150cc FIC injectors and really I don't have that many miles on them and this is kind of weird...

So number 1 and 2 are just fine but 3 and 4 are gummed up? I don't understand. And did we figure out what this stuff is anyway?

Going to try to clean the injectors with a little gas

So this is making me want to switch back over to premium fuel now. Unless there is an injector that works with E85 and doesn't gum up. I am wondering if this is why I am having starting issues right now.

The tops to the injectors look fine so there is no black gum going through the injector on the fuel rail side. I wonder how my AFPR is looking right now though...

deadeye · 08-12-2009

Thats messed up dude. There had to be a chunk of dino tar stuck in the rail or something. I would send that pic to FIC and see what they say. Maybe take the rail off and shine a light down it to see whats lurking in there.

**Shane@DBPerformance** · 08-12-2009

I have seen worse and it didn't effect the car at all, it probably going to cause funky idling when there isn't much fuel flowing. At higher loads with a lot coming out at 40psi it is probably going to cut right through that gunk. I also have seen it more pronouced on the injectors closest to the FPR.

**goodhart** · 08-12-2009

It would be interesting to send some of that gunk to a chemist or something to see what exactly it is.

**Shane@DBPerformance** · 08-12-2009

Black tar heroin.

deadeye · 08-12-2009

LOL, nice. mitsu's on the street making back all the money they take.

sleepydsm · 08-13-2009

A chemist on the Link forums already analized it!

I guess it's crap left over from using Diesel fuel tanks as e85 tanks.

Just use a little gasoline once and awhile and all should be fine.

Andrew7dg · 08-13-2009

Quote:

Originally Posted by ecoli

I have seen worse and it didn't effect the car at all, it probably going to cause funky idling when there isn't much fuel flowing. At higher loads with a lot coming out at 40psi it is probably going to cut right through that gunk. I also have seen it more pronouced on the injectors closest to the FPR.

On this it is more pronounced closest to the fuel filter and least closest to the FPR. Who knows...

There is nothing in the fuel rail itself. Everything there looks clean. Also the top of the injectors look clean.

I am going to change my Fuel Filter anyway again just to make sure and we will see what happens.

I need to buy one of those E85 sensor so I can hook it up and drive whatever ratio I want. That way I can run a full tank of regular and clean this out every once in a while.

BTW, cleaned right up with fuel and popped them back in and everything is good.

TalonFiero · 08-13-2009

I'm real curious to see what my 1250 FIC injectors look like now after running them for a few thousand miles. Previously I ran PTE 1000cc injectors for almost three years and 45K miles on E85 and didn't have any sticky looking black gunk, I only had very vey small carbon like deposit on two of the PTE injectors.

99% of the E85 I get is from a couple different Holiday's (Coon Rapids and Shoreview)

jrohner · 08-13-2009

Carbureted race engines get this goo in the intake manifold runners. I never really looked down in the intake of my racecar to inspect anything, but I recently asked my engine builder and he said he's seen it before. The fuel is always bought in a drum and then mixed with gas to get a consistent mixture you can't get at the pump, usually premium fuel is what's added. I don't know if he has anyone running E98, never asked him, to see if it's the same with that. He also has engines running less than 85% ethanol, I should ask him if he's seen the goo in them at all.

trunks11 · 09-16-2009

I've been getting the goo on cylinders 2 and 3 but not 1 and 4 for some reason (1150 FIC). I really tired of pulling the fuel rail every couple of months.. So PTE is the way to go? Sounds like there's still some issues with the Bluemax ones? Or is it just something you have to deal with e85. Can anybody confirm that running regular gas through will clean them out for sure?

Nartanian · 09-16-2009

This should be stickied since E85 is MN pump gas.

At-Least-It's-An-Evo · 09-16-2009

Quote:

Originally Posted by Nartanian

This should be stickied since E85 is MN pump gas.

huh?

Nartanian · 09-16-2009

Saying it in a sense that E85 is very common around here.

t-revzr · 09-16-2009

I have the PTE 1000's and have been running E85 for 6000 miles. Mine look great!

jrohner · 09-17-2009

The PTE-1000's I have have been perfectly clean the 3 times I've looked at them.

My RC750's have been very gooped up both times, and the second time was only after like a couple months and a couple thousand miles. Two were nearly plugged and two didn't have much on them.

Needless to say, I'm now going to keep the PTE's in my car. I had some PTE-680's before, and I think I remember a little goo on them after about a year, but not enough to even care about cleaning it off.

I wonder if certain spray patterns allow the goop to build up, and other patterns just blow it away. Either way, if you look down in your intake ports you'll most likely see the goo in there.