In the past several weeks I topped off my tank with B20 - Biodiesel. Probably only placed 15 gallons in my tank at the most. After just a couple of days when I would start my truck it immediately would run extremely rough for about 8-10 seconds. Some of you suggested it might be a fuel filter. Last week I filled the tank with all regular diesel and pulled the 5er to the BlueRidge. After a couple of short trips and rough starts the engine through a code and the engine light came on. The light finally went off. After coming down the mountain I filled the tank with regular diesel and also poured in a small amount of diesel cetane booster. The truck is now running like a top. NO more B20 for me.

 

I would get that Fuel Filter swapped out, either way.

What was the code?

 

DanTana, it might help to know where you filled up with B20 - not that you need to post it here. You're being kind of harsh saying that your problem was soley to "B20". Getting a bad batch of diesel fuel isn't unheard of.

Some folks use the term Biodiesel in a very generic sense, and those definitions may be all over the board. What kind of Bio was it? Soy? etc.. Hopefully its not of the homemade swill ilk.

I've got lots of miles on B20+ and have not had issues like you experienced.

I wouldn't be afraid of any more Bio, but probably not at the place you filled up at.

 

Yes that is what will happen until all the sludge gets out of your fuel system. The biodiesel is a cleaner. The problem with the cleaner is it remeoves all the sludge at the same time. This will clog your filter and possibly your injectors.

You must change your fuel filter. I use B100 in my new car because I know there is no sludge build up. I plan to run it in my truck but Im getting a few fuel filters before I use the B100.

Regards,

HOdiesel

 

i've been running bio for the past 10k with no probs will say that i changed two fuel filter the first 1000 miles from everything the bio cleaned out of my tank...

 

I think dantana had a bad batch of fuel. He's got an '06 and unless he's been running it on mud I don't think the fuel system has had that much time to accumulate any dirt to get clogged. And fresh fuel cleared up any issues.

I've never had any fuel filter issues in my truck due to any fuel, D2 or Bio.

 

You're supposed to replace your fuel filter after the first tank of BioD, as it cleans out your system like a solevent.

I had a great experience with a tank of B50 recently (quieter, cleaner, better mpg?), I won't rule it out for the future.

 

I agree totally. The BioDiesel will clean out that tank like a solvent tank cleans up grimy parts. We are running bio in all of our diesel motors on the farm now. Sam

 

I'm running 100% bio without any probs, I'd bet it was a bad batch. b-20 imo isn't really that concentrated to cause that big a deal. it may have been they when the bio was washed they didn't get all the water out

 

Another thing to consider - it really doesn't matter how new the truck is, or how well you have maintained the cleanliness of your fuel system in the long run. If the tank that is now dispensing Bio-Blend diesel was full of crap from it's lifespan, the you're gonna end up with all of the crap the Bio-Diesel cleans from off of the tank and all of the transfer piping.
Dry Creek

 

I'm running 100% Homemade Biio and have had no problems. I have noticed a loss of about 2mpg around town, but at $.80 a gallon I don't care. B50 would not cause all of those problems you were seeing except for cleaning out the crap in your tank. Change the filter and run the Bio, your engine should run better, quieter and also help the environment

 

It might have been too much water.

IIRC the reason Cummins doesn't recommend anything higher than B5 is the stock water-separator is not up to it. B20 and above could contain more water than can be handled, unless one were to install a FASS or GDP kit with the filter/separator combo.

 

that is sounding like the problem, that tank could be 15 yrs old for all anyone knows. just think, how many millions of gallons of fuel, dirt, water,[ jimmy Hoffa? ]were pumped in there. good idea on that one drycreek, it almost was missed

 

I've ran a couple of tanks of B20, the most recent was a fill up of 29 gallons so it wasn't too diluted by the existing fuel in my tank. It performed well, especially considering the weight I was pulling while burning the tank. Never had a drop in fuel pressure during or after the tank was used up.

The only downside was trying to figure out what the strange smell was when the truck was idling...till I remembered the B20 in the tank.