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diesel

P

papa bear

Well-known member
truck didn't want to run too well this morning. At 1900 rpm the truck would bog - fuel starving. I thought perhaps some of the biodiesel was beginning to gel. Changed the fuel filter and cut open the old one

fuel filter.jpg
 
Looks like grease to me. I'd call that gel. All the black crud is the crap growing in the fuel tank.
 
One of the many reasons the bio diesel in large concetrations is not a good thing in winter. It may become better as we learn more about it but right now it's purely a PC thing then anything else. It's pie in the sky!

Good that you shared it like you did. That was a good photo of what it's doing.
 
Same thing happened to me on Friday. Have been running b-20, and truck(Duramax) wouldn't shift out over 2k. Took it to dealer, he cleared 5 codes, but still did it all the way home. At home dealer, they stuck in a new filter, and truck runs great again.


Ace
 
Always good to change those filters twice as much in the winter, along with running some type of diesel supplement. That filter was flat nasty, does all Bio diesel gel like that?? Sure is worse than regular diesel.
 
always carry a extra fuel filter. When I start getting ****ty gas mileage I change it. It will start acting funny on acceleration shortly after that.
I seem to only get about 8-9,000 miles on a fuel filter in the North West.
It takes me about 10 min to change a fuel filter in my duramax.
 
I used the filter that was stored under the back seat. I was lucky there was a bit of an intermission in the rain today. Probably took me 20-25 minutes - going back and forth trying to find the right size tools to get the battery out of the way and then the right filter wrench to squeeeze in there. Then I forgot to bleed the air out while pushing the little finger pump..... Will stop at NAPA tomorrow to pick up a new filter to go under the back seat - just in case.

I was about ten miles from home on I-5 when it acted up. Got off the freeway and stopped at a Shell. All they had was some STP diesel fuel treatment. $6 - probably didn't do any good, but I was willing to try.

What do you guys use to clean the black crud out of your fuel tanks? I thought the biodiesel was supposed to keep the crud out. I have 85,000 on this '02 Duramax
 
At least with the bio-diesel you can scrape off the crude and fry some eggs while your waiting for the truck to warm up.
 
That crap in the filter in the picture looks very familiar.........

That is exactly what was causing all our pains getting back to Minnesota from Idaho last winter.......

As soon as the engine bogs, you had better change the filter or you are going to fry injectors!

Been there-------------------done that!!
 
That crap in the filter in the picture looks very familiar.........

That is exactly what was causing all our pains getting back to Minnesota from Idaho last winter.......

As soon as the engine bogs, you had better change the filter or you are going to fry injectors!

Been there-------------------done that!!


The second you feel anything it's time to shut it down. Injectors are expensive and like Jeff C says, it's what's going to happen if you keep pushing it. I have been lucky and never had to deal with it.

Run whats at the pumps no matter how attractive the bio game sounds. It's just not where it needs to be yet.
 
I'm pretty sure the B-20 that Ace Freely is running came from the pump and wasn't home made. I wouldn't recommend running any bio until it gets regulated better.
 
I'm pretty sure the B-20 that Ace Freely is running came from the pump and wasn't home made. I wouldn't recommend running any bio until it gets regulated better.

Your right and it wasnt came from dist in town that sells lots of it but I would not recommend using it in the cold weather:mad::mad: right Ace..:eek::eek:
 
That b-20 is only good for 42 degrees, any colder and u get sludge. i would try to get some #1 diesel to blend it off for the cold weather. it's $4/gal here and i dont even think of going with anything cheaper now that we are seeing -10 at nights now.
 
The easiest way to fix all your problems and to be able to run B100, if you want to in the winter, is to get a fuel line heater. For about $300 you can get an electric heater that wraps around the fuel line before the filter and also wraps around the filter. This will fix all your gelling issues with B20.

However, for $900 you can get a full line heater from your tank all the way to your filter. This way the bottom of the tank gets heated and the entire line to the filter is heated. You can then run B100 all year round without fear of gelling. On extremely cold days you might have to wait about 5-8 minutes for the line heater to sufficently warm the biodiesel so you can start your truck.
 
The "black stuff" is more than likely the bio eating the liner of your plastic tank, and the "snot" looks like water/algie that tends to grow when useing Bio, Thats what we've seen in the strokers, and cummins. Just my opinion.
 
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