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Question for injector and biodiesel guys....

682 Views 2 Replies 3 Participants Last post by  dieselenthusiast
My 06 rig is stock save for the DIY intake mod retaining stock 4" air cleaner.
Have used the Baldwin fuel filters every 5-6k miles since 30k. 87k miles on the rig.

Started to get an intermittent rough idle. Truck seems to run fine at speed. Mileage dropped with winter blend but nothing unusual. No ticking or knocks from high or low in the motor. No fuel smell in the exhaust. Other than the intermittant rough idle everything seems OK.

I started remembering all the threads about injectors going out causing this rough idle problem.

Here's the question...can biodiesel 'clean' the injectors? Its supposed clean the gunk out of the fuel system generally but specifically...can it cause the injectors to function better?

I decided to run a 25% blend of commercial biodiesel from cooking and dino. Truck seems to run smoother. Rough idle is gone. Made a number of short trips over the past few days then took it out and punched it pretty hard a couple of times. Blew some black smoke when first punched then a clean exhaust. Progressively less black smoke the more I punched it.

I'm not a mechanical whiz. I load the camper and the boat and drive the truck. I do maintenance sooner than the recommended intervals. Don't know much about injectors. Can the intermittant use of bio diesel cause the injectors to function better.....or is all this in my head?

Sorry for the long post....
Will check back in in a few hours..
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From my understanding, biodiesel is not only a cleaner, but it also lubricates. Biodiesel is known to increase the life of fuel injection pumps and fuel injectors. I fill up with at least B2 in every tank, sometimes B5, B10 and B20 when I can find it. I fill up at Love’s Truck Stops, which always has biodiesel here in NM. I change my oil once per year (12,000 mile) intervals and always take a UOA. I have 90,000 miles on my truck, which I bought new, and have never had problems with the injectors.
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