I’m having what appears to be injector nozzle deposit problems. Over the last few weeks have had rough idle (@900 rpm and below). After putting two bottles of RedLine in the tank it helped some, but it still idles rougher and noisier than it did 10K miles ago (got 76K miles). Anyway, local diesel shop suggested running 5-gallons of bio-diesel into an almost full tank to see if the solvent properties of bio would remove deposits and help free up any sticking injector needles. He says he’s done this before and it won’t be a problem. However, Dodge does not recommend anything above a B5 (5%) bio mix.
Dealer where I brought the truck says absolutely no… they’ve seen may problems (inj-pumps, etc) with trucks that have run even B5 mix. Anybody have any experience with running a 20% mix for one tank?

 

I have used B20 in the summer to clean out the tank and fuel system. Fuel filter gets dirty quickly. If you are north in the cold, use a B20 compatable winter fuel addative. Also you may want to use the B20 fuel filter from fleetguard #FS19856. Can't help you with the in tank lift pump filter. If you plug it up, lift pump dies.

 

well just remember if you do it and dodge and can find anything that shows you went with 20 goodbye warranty

 

Hook it up to a load and tow it hard doing 75 mph for 200 miles.

 

I have started using Power Service- Diesel Kleen + cetane boost with all summer fill ups and Diesel Fuel Supplement (white container) in the winter. Truck is used for city driving(short trips, no warmup). No problems with smoke or ruff idle.

 

Hook to a heavy load and tow with it giving the truck a workout. Works every time. B20 isn't going to clean off a carboned up tip. Working the truck will.

 

having a similar issues with the ruff idle 900 and below and alittle white smoke at idle pulled my 36 ft 5th wheel yesterday 75-80 for 5 hours run good but still smoked alittle at idle drove to work this mornin no smoke at all let it idle for couple of hours today condition came back ruff idle and alittle white smoke
what should i put in it besides changing fuel filter

 

injectors are probably bad. bio diesel wont help them out any and may make the problem worse. the higher viscosity of the bio puts extra strain on them, not uncommon to see injectors go bad on low mileage trucks

 

You may want to check the lift pump in fuel tank for flow and the fuel rail pressure at idle. nice to have the correct pressure and fuel volume at the injector befor you spend the money to replace them.

 

I've used B20 three or four times... In Illinois the truck stops are flush with the stuff. I don't know if you can buy straight diesel there. I didn't know it would hurt my truck and it hasn't.

 

Your right.... B20 won't hurt it you just have to be careful not to get any water and if it is high quality bio is not a problem.

 

I ran a couple of tanks of B100 through mine back when diesel was $5/gal not to clean out the fuel system, but because I could get it for $2/gal. It ran fine on the bio and it did clean out the fuel system pretty well because I had to change the fuel filter 2 or 3 times. I have stopped running the bio because I read a scientific article from a reputable source that said anything over B20 (I think...if I remember correctly) is bad for the newer engines because of the 3rd injection event. Don't ask me to explain why because I don't remember. Anyway, I don't think you will hurt a thing with a tank or two of B20. I say go for it and see if it helps.

 

Anything over B20 may cause you issues due to the higher pressures our common rails run at. Bio won't clean off carbon deposits on the injector tips though.

 

POSSIBLE CAUSE OF EXCESSIVE WHITE SMOKE

1) Air in fuel supply: Possible leak in fuel supply side.
2) Coolant leaking into combustion chamber.
3) Diagnostic Trouble Codes (DTC's) active or multiple, intermittent DTC's
4) In very cold ambient temperatures, engine block heater is malfunctioning (if equipped).
5) Engine coolant temperature sensor malfunctioning.
6) Engine Control Module (ECM) not calibrated or has incorrect calibration
7) Fuel filter plugged.
8) Fuel grade not correct or fuel quality is poor.
9) Fuel heater element or fuel heater temperature sensor malfunctioning. This will cause wax type build-up
in fuel filter.
10) Fuel injector malfunctioning.
11) Fuel injector hold-downs loose.
12) Fuel injector protrusion not correct.
13) Fuel injection pump malfunctioning.
14) Fuel supply side restriction.
15) Fuel transfer (lift) pump malfunctioning.
16) Intake/Exhaust valve adjustments not correct (too tight).
17) Intake manifold air temperature sensor malfunctioning.
18) Intake manifold heater circuit not functioning correctly in cold weather
19) Intake manifold heater elements not functioning correctly in cold weather.
20) Internal engine damage (scuffed cylinder).
21) Restriction in fuel supply side of fuel system.

 

Try this.. Drain the fuel filter. Then refill with power service or a good fuel injector cleaner.

Start the engine and let it run a few seconds. Then shut it off for the night. Let the fuel additive soak in the injector to loosen deposits. The solvents in the injector cleaner will break up deposits better than B20 will.

Next morning go run the heck out of it. If you can put it under a good load it will help.

See if it runs better then.