Hi Gang,

Just want to say I enjoy the forum though I've just been a lurker until now. Hate to chime in on a negative note but...

I purchased an 07 5.9 cummins and ran mainly ASCM certified B99 for about 13k miles (this dealer/station is very reputable) Then, the motor went kaput on the freeway with lots of white smoke and a knocking motor. Finally got the truck to my dealer/mechanic whom I trust and the final diagnosis was two blown injectors and the other four on the way out, caused by bio fuel. No warranty coverage and about $6,000 worth of damage. (labor, 6 injectors at $600 ea., system flush etc.)

I looked at the injectors and they did appear to be sticking and two were not working at all. I run this same biofuel in an 05 ford 6.0 and an 02 ford 7.3 with no problems to date. My mechanic is not anti-bio in fact he would run bio in his own cummins trucks if he trusted it but he says the new common rails are to high pressure with very low tolarance for fuel viscosity and he has had a few of the newer common rail dodges in the shop for bio issues. He said he thinks the fords run lower pressure on thier common rails and this may be the reason I dont have problems with the fords but not to sure why the fords seem to be doing ok. (7.3 ford isn't common rail so that motor may be condusive to better bio response)

I'm heart broken about this as I bought the truck to run bio. If I thought some type of pre filtering would solve the issue I'd be on it but I'm a bit gun shy at this point as this was a very expensive lesson.

I'm not sending this message to frighten anyone, I only want to share my experience in case its helpful and am open to suggestions regarding a solution that might allow me to run bio in the new dodge common rail and interested any one elses' experiences.

I'd like to think that if I'm the only one with such a drastic breakdown perhaps I simply had bad injectors to start with...Its been know to happen. I'm sure it wasnt the fuel as I was running the same fuel in my other trucks at the time of the dodge meltdown.

You say you were running bio in your other trucks ? are they common rail ?
There are so many variables that its hard to pin down , being certified is really not for sure , nobody is doing the complete test every batch , many processors , just like anything els , not every one is good at what they do , and every one makes mistakes .
I would say that you made a mistake , there are some claiming to be running high % bio in newer trucks , but there are a lot of forums / posts stating of problems with high % bio , the manufacture says 5% for everyone but government , they are allowed 20% with the addition of extra water filtering .
So that being said , its hard to say that you have some fault here , some with the supplier [ if you have any of that batch , you may be able to get them to take some blame ] .
I have not tried to take apart any of those injectors , many newer electronic injects , do not completely disassemble , maybe there could be some way to clean .
This is why I would not want to buy anything newer than a 12v - P pump truck .

Those 2 Ford powerstrokes are common rail but a much different setup with HEUI injectors, and the rail is lower pressure. The powerstroke injectors are very expensive if you need to replace them.

Sorry, but I don't buy it. The facts you give don't add up. If B99 from the pumps you use made your CR Cummins fail injectors, it would make the 6 liter Ford fail injectors, too.
While it's obvious that some injectors failed in your Dodge, the why is not obvious to me. I have a table full of failed CR Cummins B injectors at work, and a tester in the works. In time I hope to test injectors and find out if and to what extent the higher viz biofuel has on the CR system. Til then, I am skeptical that the modest viscosity increase will cause injectors to fail. If it did, there would be hundreds or thousands of them failing, and there aren't.
I guess if I were you, I'd cut my bio use to 20% and sell those d@mn flower smokes.
Best of luck with it!

Ummm the 6.0l and 7.3's are all driven by HPOP's. IN the 7.3L injection pressures are around 21,000psi and 29,000 in the 6.0l's. CR trucks have to have good quality fuel otherwise they do such things. Now The thing I dont understand is why your paying 600 per injector. I bought a SET of injectors for 600 bucks. I dont by the sticking injector thing, but then again I'm not well versed in the likes of these Bosch Injectors.

look on the diesel forums and you'll see plenty of people with the same problem running standard ULSD...............

I have the same engine in the same year truck as yours. 17K miles so far, not a single problem. Sorry to hear about yours though. Not obvious to me either that it's bio-related.

quote:

No warranty coverage and about $6,000 worth of damage. (labor, 6 injectors at $600 ea., system flush etc.)

This seems pricy for fuel injectors but not if they are used on a common rail system, because they are electronicaly controled injector,and yes they are exspensive. If you own a power stroke, you can to pay alot more for injectors because they have 8 injectors and they run about $300 ea,

Yep, thats what the mechanic said. New common rail injectors are much more expensive. Unfortunately I get to find out how expensive the injectors for the 05 Ford are gonna cost, I'm having problems with those injectors now.

-Dang it

This is a very common problem and wasn't caused by BD. They wont warranty it because Chrysler only approves 5% bio. Cummins says 20%bio is ok. IMO there were more than likely warning sings. They are usually hard start, white smoke on startup, poor fuel mileage, fuel in oil. If you are paying 6K for new injectors tell you mechanic to pound sand and find a reputable diesel performance shop in your area. New injectors from bosch are ~2300 and only ~3 hours to replace. You could also send your injectors in for repair. http://www.f1diesel.com and http://www.dynomitediesel.com/ both repair injectors at a fraction of the cost of new ones. If you want to run BD fix the pickup and sell it. You'll be better off with a 94-98.5 12 valve. The pump and injectors on them are stupid and will run just about anything.

I just bought a '05 Ram 2500 with 76,000 miles on it which I intend running B100 in. However, before I take delivery, it has to go into the shop to get a faulty injector replaced under warranty - and the P.O., AFIK, used DinoD full time. I don't think it's the Bio, just poor engineering - and the North American car manufacturers wonder why people are buying imports?

I have a 05 Dodge, 194,000 miles. About 20,000 on B100 from an appleseed processor, 3/27 test, drywashed. I have not had any problems.